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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,...
Serving gzipped CSS and JavaScript from Amazon CloudFront via S3
...load a gzip and non-gzip version of the css and js. Be careful naming and test in Safari. Because safari won't handle .css.gz or .js.gz files.
site.js and site.js.jgz and
site.css and site.gz.css (you'll need to set the content-encoding header to the correct MIME type to get these to serve ri...
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...
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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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 is an IndexOutOfRangeException / ArgumentOutOfRangeException and how do I fix it?
...e about custom lower bound arrays:
void foo<T>(T[] array) { }
void test() {
// This will throw InvalidCastException, cannot convert Int32[] to Int32[*]
foo((int)Array.CreateInstance(typeof(int), new int[] { 1 }, new int[] { 1 }));
}
Validate Parameters
If index comes from a paramet...
How to detect if a script is being sourced
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A line similar to this or an assignment like pathname="$_" (with a later test and action) must be on the first line of the script or on the line after the shebang (which, if used, should be for ksh in order for it to work under the most circumstances).
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