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Count the number of occurrences of a character in a string in Javascript
...d prefer to use match.
Old answer (from 2009):
If you're looking for the commas:
(mainStr.split(",").length - 1) //3
If you're looking for the str
(mainStr.split("str").length - 1) //4
Both in @Lo's answer and in my own silly jsperf test split comes ahead in speed, at least in Chrome, but ag...
How to delay the .keyup() handler until the user stops typing?
...elapsed!', this.value);
}, 500));
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<label for="input">Try it:
<input id="input" type="text" placeholder="Type something here..."/>
</label>
How it works:
The delay function wi...
How to implement a Map with multiple keys? [duplicate]
...
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43
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Working with README.md on github.com [closed]
... See The Future of Markdown - Jeff Atwood, Coding Horror and W3C Markdown Community Group.
Update 2014-09-09: CommonMark a markdown standard and spec has been released.
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How to filter a dictionary according to an arbitrary condition function?
...
Nowadays, in Python 2.7 and up, you can use a dict comprehension:
{k: v for k, v in points.iteritems() if v[0] < 5 and v[1] < 5}
And in Python 3:
{k: v for k, v in points.items() if v[0] < 5 and v[1] < 5}
...
Angular JS break ForEach
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There's no way to do this. See https://github.com/angular/angular.js/issues/263. Depending on what you're doing you can use a boolean to just not going into the body of the loop. Something like:
var keepGoing = true;
angular.forEach([0,1,2], function(count){
if(keepGo...
Dictionaries and default values
... to deal with micro-optimizations as much. Isn't that what things like JIT compilation are for?
– nishantjr
Oct 27 '14 at 7:32
3
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How to get the name of the current method from code [duplicate]
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FYI, this does not compile as sf.GetMethod() is not a string.
– Hamish Grubijan
May 3 '12 at 18:50
26
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How to make an HTTP POST web request
...atforms there is a NuGet package.
using System.Net.Http;
Setup
It is recommended to instantiate one HttpClient for your application's lifetime and share it unless you have a specific reason not to.
private static readonly HttpClient client = new HttpClient();
See HttpClientFactory for a depen...
How to select rows with one or more nulls from a pandas DataFrame without listing columns explicitly
... False
1 True
2 True
3 False
4 False
leading to the rather compact:
In [60]: df[pd.isnull(df).any(axis=1)]
Out[60]:
0 1 2
1 0 NaN 0
2 0 0 NaN
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