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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...
Null or default comparison of generic argument in C#
...
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...
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...
What is the best method to merge two PHP objects?
...m copy of an answer that had already been posted for months? stackoverflow.com/a/794356/151509
– maryisdead
May 9 '19 at 15:44
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show 2 more...
Is there a reason for C#'s reuse of the variable in a foreach?
...
The compiler declares the variable in a way that makes it highly prone to an error that is often difficult to find and debug, while producing no perceivable benefits.
Your criticism is entirely justified.
I discuss this proble...
How do I get java logging output to appear on a single line?
...ts format from a system property, so adding something like this to the JVM command line will cause it to print on one line:
-Djava.util.logging.SimpleFormatter.format='%1$tY-%1$tm-%1$td %1$tH:%1$tM:%1$tS %4$s %2$s %5$s%6$s%n'
Alternatively, you can also add this to your logger.properties:
java.u...
How can I use goto in Javascript?
...that lead to goto.js library is ALL DEAD, here is links needed:
goto.js (uncompressed) --- parseScripts.js (uncompressed)
From Goto.js:
P.S. For anyone who is wondering (so far a total of zero people), Summer of Goto is a term that was popularized by Paul Irish, while discussing this script and PHP...