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How to “properly” print a list?
... '.join(map(str, mylist))
In Python 3 (where print is a builtin function and not a syntax feature anymore):
mylist = ['x', 3, 'b']
print('[%s]' % ', '.join(map(str, mylist)))
Both return:
[x, 3, b]
This is using the map() function to call str for each element of mylist, creating a new list o...
CSS filter: make color image with transparency white
...ent from 2014. In those years there have been 33 major versions of Firefox and IE has gone from the second most popular browser in the world to essentially dead.
– Daniel Perván
Dec 1 '18 at 8:29
...
Iterate over a Javascript associative array in sorted order
...
You cannot iterate over them directly, but you can find all the keys and then just sort them.
var a = new Array();
a['b'] = 1;
a['z'] = 1;
a['a'] = 1;
function keys(obj)
{
var keys = [];
for(var key in obj)
{
if(obj.hasOwnProperty(key))
{
keys.pus...
Swift - encode URL
...lowed)
print(escapedString!)
Output:
test%2Ftest
Swift 1
In iOS 7 and above there is stringByAddingPercentEncodingWithAllowedCharacters
var originalString = "test/test"
var escapedString = originalString.stringByAddingPercentEncodingWithAllowedCharacters(.URLHostAllowedCharacterSet())
prin...
Performance difference between IIf() and If
... "Alternative")
The first is basically C#'s ternary conditional operator and the second is its coalesce operator (return result unless it’s Nothing, in which case return "Alternative"). If has thus replaced IIf and the latter is obsolete.
Like in C#, VB's conditional If operator short-circuits,...
How do I test for an empty JavaScript object?
...
Here is performance test between jQuery and underscore jsperf.com/isempty-vs-isemptyobject/6
– Mikhail
Feb 9 '16 at 11:21
24
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Check existence of input argument in a Bash shell script
...
I like to do it this way, in terse syntax and still POSIX acceptable. [ -z "$1" ] && echo "No argument supplied" I prefer one-liners, as they are easier for me; and it's also faster to check exit value, compared to using if
– J. M. Beck...
Change font color for comments in vim
...re. I want to achieve that my comments are yellow but only slightly yellow and forever. Is it possible to set this in .vimrc?
– xralf
Apr 29 '11 at 9:49
3
...
How do I clear stuck/stale Resque workers?
...rkers from the web interface, but actually they still show up as processes and also "stole" jobs from the queue
– txwikinger
Sep 5 '13 at 23:15
20
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Pass a PHP string to a JavaScript variable (and escape newlines) [duplicate]
...
Expanding on someone else's answer:
<script>
var myvar = <?php echo json_encode($myVarValue); ?>;
</script>
Using json_encode() requires:
PHP 5.2.0 or greater
$myVarValue encoded as UTF-8 (or US-ASCII, o...