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Converting a List to a comma separated string
... it allocates one string per element. Using a StringBuilder would be much more efficient.
– Steven Sudit
Oct 6 '09 at 23:49
3
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What's the difference between echo, print, and print_r in PHP?
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print and echo are more or less the same; they are both language constructs that display strings. The differences are subtle: print has a return value of 1 so it can be used in expressions whereas echo has a void return type; echo can take mult...
How to check if a column exists in a SQL Server table?
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A more concise version
IF COL_LENGTH('table_name','column_name') IS NULL
BEGIN
/* Column does not exist or caller does not have permission to view the object */
END
The point about permissions on viewing metadata applies to ...
How can I determine if a variable is 'undefined' or 'null'?
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How to sort a dataFrame in python pandas by two or more columns?
...d on opinion; back them up with references or personal experience.To learn more, see our tips on writing great answers.
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How to return multiple values? [duplicate]
Is it possible to return two or more values from a method to main in Java? If so, how it is possible and if not how can we do?
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How do you merge two Git repositories?
...n continue from original tree
git log <rev> -- README.md
There are more complex solutions like doing this manually or rewriting the history as described in other answers.
The git-subtree command is a part of official git-contrib, some packet managers install it by default (OS X Homebrew).
B...
Which characters make a URL invalid?
...rous, Yeah, I forgot to allow "%" escaped characters. It should've looked more like: /^([!#$&-;=?-[]_a-z~]|%[0-9a-fA-F]{2})+$/ Was there anything else that you found it should've been accepting? (Just to be clear, that regex only checks if the string contains valid URL characters, not if...
Onclick javascript to make browser go back to previous page?
...; This answer is quite old, so it could have been an issue introduced into more modern versions of browsers. :)
– ctrlplusb
May 29 '14 at 10:49
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How to create a .NET DateTime from ISO 8601 format
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For more info on DateTimeStyles.RoundTripKind, see stackoverflow.com/q/39572395/2014893
– Robert K. Bell
Jul 6 '18 at 6:18
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