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Javascript switch vs. if…else if…else
..., because each has a different JS processing engine, however, in running a test on the site below, the switch always out performed the if, elseif on a large number of iterations.
Test site
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How to set size for local image using knitr for markdown?
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Does not work for me either, on the latest version of all packages.
– slhck
Sep 29 '17 at 12:16
3
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How to get progress from XMLHttpRequest
... server script reads a zip file (it takes 5 seconds):
$filesize=filesize('test.zip');
header("Content-Length: " . $filesize); // set header length
// if the headers is not set then the evt.loaded will be 0
readfile('test.zip');
exit 0;
Now I can monitor the download process of the server script,...
differentiate null=True, blank=True in django
...null=True because it allows two different kinds of "blanky" values. I just tested this behaviour with Django 1.8/MySQL 5.6
– Edward D'Souza
Aug 3 '16 at 17:14
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string.charAt(x) or string[x]?
...rks on all major browsers, except for IE7 and below.
// Bracket Notation
"Test String1"[6]
// charAt Implementation
"Test String1".charAt(6)
It used to be a bad idea to use brackets, for these reasons (Source):
This notation does not work in IE7.
The first code snippet will return
undef...
How to check for DLL dependency?
...ially done in C#, meet "Dependencies.exe": github.com/lucasg/Dependencies. Test impression: a bit beta-ish, but it handles API-sets and SxS apparently (missing from Dependency Walker).
– Stein Åsmul
Dec 14 '17 at 12:15
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What does an exclamation mark mean in the Swift language?
...t basically tells the compiler "I know this has a value, you don't need to test for it". If you didn't want to use it, you could conditionally test for it:
if let otherPerson = john {
otherPerson.apartment = number73
}
The interior of this will only evaluate if john has a value.
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Is there a limit to the length of a GET request? [duplicate]
...sted By User Erickson, I Post My comment As Answer:
I have done some more testing with IE8, IE9, FF14, Opera11, Chrome20 and Tomcat 6.0.32 (fresh installation), Jersey 1.13 on the server side. I used the jQuery function $.getJson and JSONP. Results: All Browsers allowed up to around 5400 chars. FF ...
Is it not possible to stringify an Error using JSON.stringify?
...
configurable: true,
writable: true
});
var error = new Error('testing');
error.detail = 'foo bar';
console.log(JSON.stringify(error));
// {"message":"testing","detail":"foo bar"}
Using Object.defineProperty() adds toJSON without it being an enumerable property itself.
Regarding mo...
Will console.log reduce JavaScript execution performance?
...with the same static text (no object or array; literally just console.log('test') would do it) also causes a performance hit. This came to my attention as I was logging "called" within a function that got invoked on hundreds of React components during re-renders. The mere presence of the logging cod...