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Referring to the null object in Python
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148
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How does @synchronized lock/unlock in Objective-C?
...o think of them as two separate interfaces implemented on top of a common (more primitive) entity.
In particular with a NSLock you have an explicit lock whereas with @synchronized you have an implicit lock associated with the object you are using to synchronize. The benefit of the language level lo...
What is the shortest function for reading a cookie by name in JavaScript?
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Shorter, more reliable and more performant than the current best-voted answer:
function getCookieValue(a) {
var b = document.cookie.match('(^|;)\\s*' + a + '\\s*=\\s*([^;]+)');
return b ? b.pop() : '';
}
A performance compa...
Why was the arguments.callee.caller property deprecated in JavaScript?
...It does not pollute the namespace.
The value of this does not change.
It's more performant (accessing the arguments object is expensive).
Whoops,
Just realised that in addition to everything else the question was about arguments.callee.caller, or more specifically Function.caller.
At any point i...
What is the difference between JDK dynamic proxy and CGLib?
...ay not cost any extra stack frames. This becomes increasingly relevant the more complex the app gets (because the larger the stack, the more memory threads consume).
– Ray
Feb 8 '13 at 19:12
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Find rows that have the same value on a column in MySQL
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count(1) works equally well, and is more performant. (Learned that trick from Stack Overflow ;-)
– jpaugh
Jul 18 '16 at 18:32
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How to apply bindValue method in LIMIT clause?
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Filter LogCat to get only the messages from My Application in Android?
...t; *:S
-d denotes an actual device and -e denotes an emulator. If there's more than 1 emulator running you can use -s emulator-<emulator number> (eg, -s emulator-5558)
Example: adb -d logcat com.example.example:I *:S
Or if you are using System.out.print to send messages to the log you can ...
Are single quotes allowed in HTML?
...ot recognise single quotes for HTML fields. Of course, there will be a lot more that it doesn't recognise... ;P
– Lightness Races in Orbit
Jun 10 '11 at 19:29
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