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What's better at freeing memory with PHP: unset() or $var = null
... interesting to know if one is better than the other. I have been using unset() for most of my coding, but I've recently looked through a few respectable classes found off the net that use $var = null instead.
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How do I iterate through children elements of a div using jQuery?
... editor after snippets, if snippets enabled
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How does the static modifier affect this code?
...n a top-down order.
The first to be called is the constructor of A, which sets num1 and num2 both to 1:
static A obj = new A();
Then,
static int num2=0;
is called and sets num2=0 again.
That is why num1 is 1 and num2 is 0.
As a side note, a constructor should not modify static variables, tha...
What is the difference between declarative and procedural programming paradigms?
...tion, etc." Another example is Prolog, where a "program" is a declarative set of facts and relations/deductions, and a query. The Prolog engine figures out how to evaluate the query: you don't need to tell it how to do so. Finally, regular expressions: you describe the pattern rather than spellin...
How to leave a message for a github.com user
.../]*).*$/,'$1')}/events/public`).then(e=> e.json()).then(e => [...new Set([].concat.apply([],e.filter(x => x.type==='PushEvent').map(x => x.payload.commits.map(c => c.author.email)))).values()]).then(x => results.innerText = x)">GO</button>
<div id=results></div&g...
How to increase maximum execution time in php [duplicate]
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ini_set('max_execution_time', '300'); //300 seconds = 5 minutes
ini_set('max_execution_time', '0'); // for infinite time of execution
Place this at the top of your PHP script and let your script loose!
Taken from Increase PHP...
windbg 备忘 - 更多技术 - 清泛网 - 专注C/C++及内核技术
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sx, sxd, sxe, sxi, sxn, sxr, sx- (Set Exceptions)
The sx* commands control the action that the debugger takes when an exception occurs in the application that is being debugged, or when certain events occur.
--引http://www.vcfans.com/2010/04/wind...
How to get the current time in milliseconds from C in Linux?
...presentation of time is not relevant to or effected by timezone itself, so setting tz param of gettimeofday() is not necessary, since it won't make any difference.
And, according to man page of gettimeofday(), the use of the timezone structure is obsolete, thus the tz argument should normally be sp...
How to Generate unique file names in C#
... finds one that doesn't exist. It reads the existing filenames into a HashSet to check for collisions so it's pretty quick (a few hundred filenames per second on my machine), it's thread safe too, and doesn't suffer from race conditions.
For example, if you pass it test.txt, it will attempt to cre...
How to use MySQL DECIMAL?
...lanation to give you an idea of how it works.
Suppose that your column is set to be DECIMAL(13,4). This means that the column will have a total size of 13 digits where 4 of these will be used for precision representation.
So, in summary, for that column you would have a max value of: 999999999.999...