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Where is array's length property defined?
...owing:
The public final field length, which contains the number of components of the array. length may be positive or zero.
The public method clone, which overrides the method of the same name in class Object and throws no checked exceptions. The return type of the clone method of an array...
Best practices for overriding isEqual: and hash
...231:1237);
Explanation and Attribution
This is not tcurdt's work, and comments were asking for more explanation, so I believe an edit for attribution is fair.
This algorithm was popularized in the book "Effective Java", and the relevant chapter can currently be found online here. That book po...
Trigger change event of dropdown
...Leniel Macaferi , Thanks a lot. Christophe, could you please add Leniel's comment to your answer?
– Zaxter
Mar 11 '15 at 8:53
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Null or default comparison of generic argument in C#
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To avoid boxing, the best way to compare generics for equality is with EqualityComparer<T>.Default. This respects IEquatable<T> (without boxing) as well as object.Equals, and handles all the Nullable<T> "lifted" nuances. Hence:
if(Equality...
How do I create a custom Error in JavaScript?
...NotImplementedError", message : "too lazy to implement"};
Edit based on comments
After looking at the comments and trying to remember why I would assign prototype to Error.prototype instead of new Error() like Nicholas Zakas did in his article, I created a jsFiddle with the code below:
func...
How to pass variable from jade template file to a script file?
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Semaphore vs. Monitors - what's the difference?
... one person can enter at a time. They lock the door to prevent anyone else coming in, do their stuff, and then unlock it when they leave.
A semaphore is like a bike hire place. They have a certain number of bikes. If you try and hire a bike and they have one free then you can take it, otherwise you...
Multiple arguments vs. options object
...this:
initiateTransferProtocol("http", false, 150, 90, null, true, 18);
Completely unreadable unless you do some research. On the other hand, this code reads well:
initiateTransferProtocol({
"protocol": "http",
"sync": false,
"delayBetweenRetries": 150,
"randomVarianceBetweenRetrie...
How to Deal with Temporary NSManagedObject instances?
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NOTE: This answer is very old. See comments for full history. My recommendation has since changed and I no longer recommend using unassociated NSManagedObject instances. My current recommendation is to use temporary child NSManagedObjectContext instances.
Ori...
Can I create a One-Time-Use Function in a Script or Stored Procedure?
...inside of a SQL script or Stored Procedure? I'd like to abstract away some complexity in a script I'm writing, but it would require being able to declare a function.
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