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Regular expression to allow spaces between words
...tl;dr
Just add a space in your character class.
^[a-zA-Z0-9_ ]*$
Now, if you want to be strict...
The above isn't exactly correct. Due to the fact that * means zero or more, it would match all of the following cases that one would not usually mean to match:
An empty string, "".
A string...
Javascript Array.sort implementation?
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I believe V8 is now using TimSort: github.com/v8/v8/blob/78f2610345fdd14ca401d920c140f8f461b631d1/…
– celwell
Jan 1 '19 at 1:18
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Normalize data in pandas
...es and stdevs assumes your sample covers the population, but sometimes we know this isn't true. It was also very useful for me when visualizing data in heatmaps. So i built a custom function (used extra steps in the code here to make it as readable as possible):
def NormData(s,low='min',center='mid...
Changing .gitconfig location on Windows
...n imported and expanded in place as if it was part of .gitconfig file. So now I just have a single entry in .gitconfig:
[include]
path = c:\\path\\to\\my.config
Any updates written by Git to the .gitconfig file will not overwrite my include path. It does mean that occasionally I may need to ...
PHP array delete by value (not key)
...nt) instead. No biggie, but just wanted anyone who had a similar issue to know that they weren't alone
– Angad
Aug 26 '13 at 14:11
8
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How do you return from 'gf' in Vim
I am using Vim for windows installed in Unix mode. Thanks to this site I now use the gf command to go to a file under the cursor.
...
How to set UITextField height?
...tField to check its height. Use this to set up your height constraint, and now you can change the borderStyle back to the rounded one.
– Benjohn
Aug 6 '15 at 16:37
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The most sophisticated way for creating comma-separated Strings from a Collection/Array/List?
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Note: This answers was good when it was written 11 years ago, but now there are far better options to do this more cleanly in a single line, both using only Java built-in classes or using a utility library. See other answers below.
Since strings are immutable, you may want to use the Str...
Unsafe JavaScript attempt to access frame with URL
...ge/, instead of doing
parent.location.hash = "#foobar";
you do need to know the parents location and do
parent.location = "http://example.com/page/#foobar";
Since the resource is not navigated this will work as expected, only changing the hash part of the url.
If you are using this for cross-...
CORS: Cannot use wildcard in Access-Control-Allow-Origin when credentials flag is true
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Ah, now that's more convenient, however, the result's the same :( BTW, I'm using app.use(cors({credentials: true}));
– ixaxaar
Nov 2 '13 at 15:34
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