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Massive update.

This commit is contained in:
Rico Sta. Cruz 2012-10-11 16:13:19 +08:00
parent fe1d99347c
commit baca60b2ee
17 changed files with 486 additions and 18 deletions
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7
bash.md
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@ -1,6 +1,11 @@
title: Bash title: Bash
--- ---
### Clever one liners
# Search and replace in all files
perl -p -i -e "s/from/to/g" **/*.css
### String substitutions by patterns ### String substitutions by patterns
STR=/path/to/foo.c STR=/path/to/foo.c
@ -31,7 +36,7 @@ title: Bash
for i in /etc/rc.*; do for i in /etc/rc.*; do
echo $i echo $i
end done
### Reading input ### Reading input

58
canvas.md Normal file
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@ -0,0 +1,58 @@
### Getting the context
var canvas = document.getElementById('c');
var c = canvas.getContext("2d");
### Basic drawing
// x = 10, y = 20, width = 200, height = 100
c.fillStyle = '#ff0000';
c.strokeStyle = '#ff00ff';
c.lineWidth = 5;
c.lineCap = 'round';
c.fillRect(10, 20, 200, 100);
c.stroke();
### Image drawing
c.drawImage(image, dx, dy, [dw, dh]);
/* `image` can be HTML Image/Canvas/Video */
### Colors, styles shadows
c.strokeStyle = '#ff00ff';
c.fillStyle = '#ff00ff';
c.shadowOffsetX = 0;
c.shadowOffsetY = 0;
c.shadowOffsetBlur = 3.0;
c.shadowColor = 'rgba(0,0,0,0.2)';
### Gradients
gr = c.createLinearGgadient(x0,y0,x1,y1)
gr = c.createRadialGradient(x0,y0,r0,x1,y1,r1)
pat = c.createPattern(image, 'repeat-x')
c.fillStyle = gr
### Drawing
c.beginPath()
c.moveTo(x,y)
c.lineTo(x,y)
c.quadraticCurveTo(cpx,cpy,x,y)
c.bezierCurveTo(cp1x,cp1y,cp2x,cp2y)
c.arcTo(...)
c.arc(...)
c.closePath()
### Text
### Resources
* [Canvas Cheatsheet PDF][cc]
[cc]: http://www.nihilogic.dk/labs/canvas_sheet/HTML5_Canvas_Cheat_Sheet.pdf

39
css.md
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@ -7,7 +7,10 @@ Webkit extensions
### Font smoothing ### Font smoothing
/* maxvoltar.com/archive/-webkit-font-smoothing */ /* maxvoltar.com/archive/-webkit-font-smoothing */
html { -webkit-font-smoothing: antialiased; } * {
text-rendering: optimizeLegibility !important;
-webkit-font-smoothing: antialiased !important;
}
### Heading kerning pairs and ligature ### Heading kerning pairs and ligature
@ -28,3 +31,37 @@ Webkit extensions
/* http://www.webkit.org/blog/85/introducing-text-stroke/ */ /* http://www.webkit.org/blog/85/introducing-text-stroke/ */
-webkit-text-stroke: 3px black; -webkit-text-stroke: 3px black;
### iOS Scrolling prevention
document.ontouchstart = (e) ->
$pane = $(e.target).closest('.scrollable>div')
if $pane.length is 0 or $pane[0].scrollHeight <= $pane.innerHeight()
e.preventDefault()
%ios-scrollable
&, >div
-webkit-overflow-scrolling: touch
overflow: auto
>div
position: absolute
top: 0
left: 0
right: 0
bottom: 0
### UIWebView optimizations
/* http://www.bitsandpix.com/entry/ios-webkit-uiwebview-remove-tapclick-highlightborder-with-css/ */
* {
-webkit-tap-highlight-color: rgba(0,0,0,0);
-webkit-user-select: none; /* disable text select */
-webkit-touch-callout: none; /* disable callout, image save panel (popup) */
-webkit-tap-highlight-color: transparent; /* "turn off" link highlight */
}
a:focus {
outline:0; // Firefox (remove border on link click)
}

10
fitness.md
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@ -44,3 +44,13 @@ Jennifer Thompson video: http://www.youtube.com/watch?v=34XRmd3a8_0
intense exercise (>70% VO2 max) primarily utilized carbohydrate. intense exercise (>70% VO2 max) primarily utilized carbohydrate.
http://www.exrx.net/Nutrition/Substrates.html http://www.exrx.net/Nutrition/Substrates.html
### Deloads on a cut
- "I would never recommend traditional style deloads on a cut, regardless of
training regimen."
- "increase the rest day interval between sessions"
https://www.facebook.com/permalink.php?story_fbid=273265046115238&id=116211138487297&comment_id=1262284&offset=0&total_comments=34

5
html.md
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@ -9,6 +9,11 @@ title: HTML
<!--[if IE 9 ]> <html class="ie9"> <![endif]--> <!--[if IE 9 ]> <html class="ie9"> <![endif]-->
<!--[if (gt IE 9)|!(IE)]><!--> <html class=""> <!--<![endif]--> <!--[if (gt IE 9)|!(IE)]><!--> <html class=""> <!--<![endif]-->
### IE conditionals
<!--[if IE]> I'm IE <![endif]-->
<!--[if !IE]> --> Not IE <!-- <![endif]-->
### iPhone viewport ### iPhone viewport
<meta name="viewport" content="width=320; initial-scale=1.0; maximum-scale=1.0; user-scalable=0;"/> <meta name="viewport" content="width=320; initial-scale=1.0; maximum-scale=1.0; user-scalable=0;"/>

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javascript.md Normal file
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@ -0,0 +1,43 @@
## Web workers
// Client code
var worker = new Worker('worker.js');
worker.onmessage = function(message) {
alert(message.data);
});
worker.postMessage("");
### Worker code
// worker.js
self.onmessage = function(message) {
alert(message.data);
}
self.postMessage("");
### Message data
// [MessageEvent]
bubbles: false
cancelBubble: false
cancelable: false
clipboardData: undefined
currentTarget: Worker
data: "Hello"
defaultPrevented: false
eventPhase: 0
lastEventId: ""
origin: ""
ports: Array[0]
returnValue: true
source: null
srcElement: Worker
target: Worker
timeStamp: 1344821022383
type: "message"

5
linux.md
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@ -2,3 +2,8 @@
$ mount -t tmpfs -o size=5G,nr_inodes=5k,mode=700 tmpfs /tmp $ mount -t tmpfs -o size=5G,nr_inodes=5k,mode=700 tmpfs /tmp
### Visudo
sudo visudo
username ALL=(ALL) NOPASSWD:/sbin/restart whatever

41
makefile.md
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@ -1,17 +1,53 @@
### Safe assignment ### Var assignment
JS_COMPRESSOR := $(uglify)
# Safe assignment
prefix ?= /usr/local prefix ?= /usr/local
### Magic variables
$^ -- dependencies
$@ -- the thing to be built
$@ -- Rule target
$% -- Target member name ('foo' in 'foo.c' for '%.c')
$^ -- Prerequisites (all, without duplication)
$+ -- Prerequisites (all, with duplication)
$? -- Prerequisites (new ones)
$| -- Prerequisites (order-only?)
$< -- Prerequisite (first)
$* -- Basename without extension of the target (?)
### Cool stuff ### Cool stuff
gitdir ?= $(shell git --exec-path) gitdir ?= $(shell git --exec-path)
gitver ?= $(word 3,$(shell git --version)) gitver ?= $(word 3,$(shell git --version))
### Find files
FILES = $(shell find images -name "*")
$(patsubst images/%, assets/%, $(shell find images -name "*"))
### Substitutions ### Substitutions
# Same
$(SOURCE:.cpp=.o) $(SOURCE:.cpp=.o)
$(patsubst %.cpp, %.c, $(SOURCES)) $(patsubst %.cpp, %.c, $(SOURCES))
$(strip $(string_var))
$(filter %.less, $(files))
$(filter-out %.less, $(files))
### Executing
JS_COMPRESSOR := $(uglify)
docs:
$(JS_COMPRESSOR) file.js
### Building files ### Building files
%.o: %.c %.o: %.c
@ -22,5 +58,4 @@
default: default:
@echo "hello." @echo "hello."
@false @false

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postgresql.md Normal file
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* Show tables: `\dt`
* Show databases: `\l`
* Show columns of a table: `\d table` or `\d+ table`

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rails-helpers.md Normal file
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title: Rails helpers
---
### Date helpers
http://api.rubyonrails.org/classes/ActionView/Helpers/DateHelper.html
### Date
distance_of_time_in_words(Time.now, project.end_date) #=> 3 hours
distance_of_time_in_words_to_now project.end_date #=> 3 hours
### Time select
# Creates a time select tag that, when POSTed, will be stored in the article
# variable in the sunrise attribute.
time_select "article", "start_time"
# All options are optional
time_select "article", "start_time", \
:include_seconds => true,
:minute_step => 15,
:prompt => true,
:prompt => { :hour => "Choose hr", :minute => "Choose min", :second => "Choose sec" },
:ampm => true
# For dates (all options are optional)
date_select "article", "written_on", \
:start_year => 1995,
:use_month_numbers => true,
:discard_day => true,
:include_blank => true,
:order => [:day, :month, :year],
:default => 3.days.from_now,
:default => { :day => 20 },
:prompt => { :day => 'Select day', :month => 'Select month', :year => 'Select year' }
### Time tag
time_tag Date.today #=> <time datetime="2010-11-04">November 04, 2010<%rtime>
time_tag Time.now #=> <time datetime="2010-11-04T17:55:45+01:00">November 04, 2010 17:55</time>
time_tag Date.yesterday, 'Yesterday' #=> <time datetime="2010-11-03">Yesterday<%rtime>
time_tag Date.today, :pubdate => true #=> <time datetime="2010-11-04" pubdate="pubdate">November 04, 2010</time>
## Forms
### Forms
= form_for @post do |f|
### Fields
f.check_box :enabled
f.text_field :title
f.text_area :body, \
:size => '60x12'
### Select dropdowns
f.time_zone_select :time_zone
f.date_select :birthday
f.select :city_id, [['Lisbon',1], ['Madrid',2], ...], 4 # (4 = selected)
f.collection_select :city_id, City.all, :id, :name
options_for_select [['Lisbon',1], ['Madrid', 2], ...], 4 # Just makes <option> tags
### The rest
f.submit "Create"
### Files
= form_for @post, :multipart => true do |f|
= f.file_field :picture

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rails-migrations.md
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@ -1,6 +1,11 @@
title: Rails migrations title: Rails migrations
------- -------
### Automatically make migrations
$ rails generate migration RemovePartNumberFromProducts part_number:string
$ rails generate migration AddNameToWidgets name:string
### Run migrations ### Run migrations
$ rake db:migrate $ rake db:migrate

24
rails-models.md
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@ -106,16 +106,24 @@ Validation
class Person < ActiveRecord::Base class Person < ActiveRecord::Base
# Non empty
  validates :name, :presence => true
# Checkboxes # Checkboxes
  validates :terms_of_service, :acceptance => true   validates :terms_of_service, :acceptance => true
# Validate associated records # Validate the associated records to ensure they're valid as well
  has_many :books   has_many :books
  validates_associated :books   validates_associated :books
# Confirmation (like passwords) # Confirmation (like passwords)
validates :email, :confirmation => true validates :email, :confirmation => true
# Unique
validates :slug, :uniqueness => true
validates :slug, :uniqueness => { :case_sensitive => false }
validates :holiday, :uniqueness => { :scope => :year, :message => "only once a year" }
# Format # Format
validates :legacy_code, :format => { validates :legacy_code, :format => {
:with => /\A[a-zA-Z]+\z/, :with => /\A[a-zA-Z]+\z/,
@ -142,11 +150,15 @@ Validation
validates :points, :numericality => true validates :points, :numericality => true
validates :games_played, :numericality => { :only_integer => true } validates :games_played, :numericality => { :only_integer => true }
# Non empty
  validates :name, :presence => true
# Multiple # Multiple
validate :login, :email, :presence => true validates :login, :email, :presence => true
# Conditional
validates :description, :presence => true, :if => :published?
validates :description, :presence => true, :if => lambda { |obj| .. }
# On
validates :title, :presence => true, :on => :save # :save | :create | :update
end end
### Custom validations ### Custom validations
@ -158,7 +170,7 @@ Validation
errors.add(:foo, 'cant be nil') if foo.nil? errors.add(:foo, 'cant be nil') if foo.nil?
end end
end end
API API
--- ---

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sass.md
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@ -1,6 +1,24 @@
### Compass: Sprites
### Sprites @import compass/utilities/sprites
$sprites: sprite-map('sprites/*.png')
$sprites: sprite-map('sprites/*.png', $spacing: 20px)
@mixin sprite($name)
background-image: sprite-url($sprite)
+sprite-dimensions($sprite, $name)
width: image-width(sprite-file($sprite, $name)
height: image-height(sprite-file($sprite, $name)
+sprite-background-position($sprite, $name[, $offset-x, $offset-y])
background-position: sprite-position($sprite, $name)
nth(sprite-position($sprite, $name), 1) # X position
nth(sprite-position($sprite, $name), 2) # Y position
### Compass: Sprites (the @import way)
// Sprite sets (applies to icon/*.png) // Sprite sets (applies to icon/*.png)
$icon-spacing: 0 $icon-spacing: 0
@ -33,3 +51,11 @@
background: sprite($icon-sprites, refresh, -2px, -9px) background: sprite($icon-sprites, refresh, -2px, -9px)
//background: url(...) -2px -19px; //background: url(...) -2px -19px;
### Loopo
$i: 6;
@while $i > 0 {
.item-#{$i} { width: 2em * $i; }
$i: $i - 2;
}

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stylus.md Normal file
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@ -0,0 +1,82 @@
title: Stylus
----
### Variables
royal-blue = #36a
support-for-ie ?= true
div
color: royal-blue
### Mixin without args
red-border()
border: solid 2px red
div
red-border()
### Mixin with arguments
border-radius(n)
-webkit-border-radius: n
border-radius: n
div
border-radius: 2px
Or with defaults:
border-radius(n=2px)
-webkit-border-radius: n
Multiple args:
xy(left, top)
left: left
top: top
div
xy: 2px 2px
### Functions
add(a, b)
a + b
body
padding: add(10px, 5)
### Interpolation
-{prefix}-border-radius: 2px
### Built-in functions
alpha(#fff) //=> 1
alpha(rgba(0, 0, 0, 0.2)) //=> 0.2
dark(black) //=> true
light(black) //=> false
lighten(color, 10%)
darken(color, 10%)
saturate(color, 10%)
invert(color)
width: image-size(img)[0]
height: image-size(img)[1]
unquote(string)
s("rgba(0, 0, 0, %s)", 0.3) // Works like eval?
Add Property:
gradient(color)
add-property('background-image', linear-gradient(top, color, darken(color, 20%)))
color
body
background: gradient(red)

2
tig.md
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@ -31,6 +31,8 @@ Tig shortcuts
! # Revert file or chunk ! # Revert file or chunk
C # Commit C # Commit
M # Merge M # Merge
1 # Stage line
[] # Increase/decrease the diff context
### `H` - Branch view ### `H` - Branch view

24
vim.md
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@ -3,7 +3,10 @@ title: vim
. - repeat last command . - repeat last command
]p - paste under the current indentation level ]p - paste under the current indentation level
`. - Go to last edit `. - Go to last edit
`` - Go to last jump
C-o - Go back to previous location (C-i forward) C-o - Go back to previous location (C-i forward)
C-t - Go back to last tag C-t - Go back to last tag
@ -22,9 +25,9 @@ Motions
ap - a paragraph ap - a paragraph
ip - inner paragraph ip - inner paragraph
{a,i}p - Paragraph ap, ip - Paragraph
{a,i}w - Word aw, iw - Word
{a,i}s - Sentence as, is - Sentence
ab - A block [( ab - A block [(
aB - A block in [{ aB - A block in [{
@ -32,13 +35,22 @@ Motions
a[ ( { < - A [], (), or {} block a[ ( { < - A [], (), or {} block
a' " ` - A quoted string a' " ` - A quoted string
Example: Example:
yip - Yank inner paragraph yip - Yank inner paragraph
yap - Yank paragraph (including newline) yap - Yank paragraph (including newline)
SCSS! Tags
----- ----
^] - Jump to definition
g] - See all definitions
^O ^I - Back/forward
:tselect Classname - Find definitions of Classname
:tjump Classname - Find definitions of Classname (auto-select 1st)
:tag Classname - Jump to first definition of Classname
## My own customizations
va{= - reindent block va{= - reindent block

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vows.md Normal file
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title: Vows
---
### Vows
* [Vowsjs.org](http://vowsjs.org/)
### CoffeeScript usage
vows = require "vows"
assert = require "assert"
vows
.describe('My tests')
.addBatch
'context':
topic: ->
100
'should work': (number) ->
assert.equal number, 100
.export(module)
### Running
vows test/*-test.* --spec
### Assertions
assert.equal a, b
assert.notEqual a, b
assert.strictEqual a, b
assert.isNaN(number)
assert.instanceOf(object, klass)
assert.isUndefined(object)
assert.isFunction(func)
assert.isNull(object)
assert.isNotZero(object)
assert.isObject(object)
assert.isString(object)
### Async
.addBatch
topic: ->
doStuff()
@callback 2
'check things': (n) ->
assert.equal 2, n