miguel12345’s gists

miguel12345 / 0_reuse_code.js

Created November 27, 2013 13:39

Here are some things you can do with Gists in GistBox.

	// Use Gists to store code you would like to remember later on
	console.log(window); // log the "window" object to the console

miguel12345 / new_gist_file

Created November 28, 2013 18:20

Block

	// Here's a method that takes a block
	- (void)doMathWithBlock:(int (^)(int, int))mathBlock {
	self.label.text = [NSString stringWithFormat:@"%d", mathBlock(3, 5)];
	}

	// Calling that method with a block
	- (IBAction)buttonTapped:(id)sender {
	[self doMathWithBlock:^(int a, int b) {
	return a + b;
	}];

miguel12345 / new_gist_file.html

Created November 28, 2013 20:02

Videos and fallbacks

<video id="news" width=640 height=480 controls preload>
<!-- WebM format for Firefox and Chrome -->
<source src="news.webm" type='video/webm; codecs="vp8, vorbis"'>
<!-- H.264 format for IE and Safari -->
<source src="news.mp4" type='video/mp4; codecs="avc1.42E01E, mp4a.40.2"'> <!-- Fall back on the Flash plugin -->
<object width=640 height=480 type="application/x-shockwave-flash"
data="flash_movie_player.swf">
<!-- Param elements here configure the Flash movie player you're using --> <!-- Text is the ultimate fallback content -->
<div>video element not supported and Flash plugin not installed.</div>
</object> 
</video>

miguel12345 / new_gist_file.html

Created November 29, 2013 08:05

Canvas basic example

<body>
This is a red square: <canvas id="square" width=10 height=10></canvas>. 
This is a blue circle: <canvas id="circle" width=10 height=10></canvas>. 

<script>
var canvas = document.getElementById("square");
var context = canvas.getContext("2d");
context.fillStyle = "#f00";
context.fillRect(0,0,10,10);
canvas = document.getElementById("circle"); context = canvas.getContext("2d"); context.beginPath();
context.arc(5, 5, 5, 0, 2*Math.PI, true); context.fillStyle = "#00f";
context.fill(); 
  
</script> 
  
</body>

miguel12345 / new_gist_file.js

Created November 29, 2013 08:49

Users geolocation img element

// Return a newly created <img> element that will (once geolocation succeeds) // be set to display a Google map of the current location. Note that the caller // must insert the returned element into the document in order to make it
// visible. Throws an error if geolocation is not supported in the browser function getmap() {
// Check for geolocation support
if (!navigator.geolocation) throw "Geolocation not supported";
// Create a new <img> element, start a geolocation request to make the img // display a map of where we are, and then return the image.
var image = document.createElement("img"); navigator.geolocation.getCurrentPosition(setMapURL);
return image;
// This function will be invoked after we return the image object, when // (and if) the geolocation request succeeds.
function setMapURL(pos) {
// Get our position information from the argument object
var latitude = pos.coords.latitude; // Degrees N of equator var longitude = pos.coords.longitude; // Degrees E of Greenwich var accuracy = pos.coords.accu

miguel12345 / new_gist_file.js

Created November 29, 2013 08:51

Geolocation options, and speed/altitude etc

	// Determine my location asynchronously and display it in the specified element.
	function whereami(elt) {
	// Pass this object as the 3rd argument to getCurrentPosition()
	var options = {
	// Set to true to get a higher accuracy reading (from GPS, for example) // if available. Note, however that this can affect battery life.
	enableHighAccuracy: false, // Approximate is okay: this is the default
	// Set this property if a cached location is good enough.
	// The default is 0, which forces location to be checked anew.
	maximumAge: 300000, // A fix from the last 5 minutes is okay
	// How long are you willing to wait to get the location?

miguel12345 / new_gist_file

Created November 29, 2013 09:22

Singleton

	+ (MyClass *)sharedInstance {
	static MyClass *sharedInstance;
	@synchronized(self) {
	if (sharedInstance == nil) {
	sharedInstance = [[MyClass alloc] init];
	}
	}
	return sharedInstance;
	}

miguel12345 / new_gist_file

Created November 29, 2013 09:54

Load view from nib

	+(Class*) loadFromNib
	{
	NSArray* nibContents = [[NSBundle mainBundle] loadNibNamed:@"Class" owner:nil options:nil];
	return nibContents[0];
	}

miguel12345 / new_gist_file

Created November 29, 2013 10:06

Verify email

	NSString* emailString = @"[email protected]";
	NSString *emailRegEx = @"[A-Z0-9a-z._%+-]+@[A-Za-z0-9.-]+\\.[A-Za-z]{2,4}";
	NSPredicate *emailTest = [NSPredicate predicateWithFormat:@"SELF MATCHES %@", emailRegEx];
	[emailTest evaluateWithObject:emailString]; //returns BOOL

miguel12345 / new_gist_file

Created November 29, 2013 10:55

Facebook flow

	- (void)sessionStateChanged:(FBSession *)session
	state:(FBSessionState) state
	error:(NSError *)error
	{
	switch (state) {
	case FBSessionStateOpen: {
	//open!
	}
	break;
	case FBSessionStateClosed:

Miguel Ferreira miguel12345