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Best way to detect that HTML5 is not supported
The standard way to deal with situations where the browser does not support the HTML5 <canvas> tag is to embed some fallback content like:
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How to make return key on iPhone make keyboard disappear?
I have two UITextFields (e.g. username and password) but I cannot get rid of the keyboard when pressing the return key on the keyboard. How can I do this?
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The executable gets signed with invalid entitlements in Xcode
I got this error with Xcode 5 when I try to run the app on my device.
40 Answers
40
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What's Alternative to Singleton
We have a class that holds configuration information for the application. It used to be a singleton. After some architectural review, we were told to remove the singleton. We did see some benefits of not using singleton in the unit testing because we can test different configurations all at once.
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PHP + MySQL transactions examples
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The idea I generally use when working with transactions looks like this (semi-pseudo-code):
try {
// First of all, let's begin a transaction
$db->beginTransaction();
// A set of queries; if one fails, an exception should be thrown
$db->q...
Is there a native jQuery function to switch elements?
Can I easily swap two elements with jQuery?
22 Answers
22
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What's the equivalent of Java's Thread.sleep() in JavaScript? [duplicate]
... is no such function.
The closest thing you have is:
var millisecondsToWait = 500;
setTimeout(function() {
// Whatever you want to do after the wait
}, millisecondsToWait);
Note that you especially don't want to busy-wait (e.g. in a spin loop), since your browser is almost certainly executin...
Good way of getting the user's location in Android
Getting the user's current location within a threshold ASAP and at the same time conserve battery.
10 Answers
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Macro vs Function in C
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Macros are error-prone because they rely on textual substitution and do not perform type-checking. For example, this macro:
#define square(a) a * a
works fine when used with an integer:
square(5) --> 5 * 5 --> 25
but does very strange things when used with expressions:
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How to send SMS in Java
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edited Mar 7 '16 at 16:19
community wiki
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