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Using the Swift if let with logical AND operator &&
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answered Feb 24 '15 at 11:32
Max MacLeodMax MacLeod
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Formula to determine brightness of RGB color
...Note that both of these emphasize the physiological aspects: the human eyeball is most sensitive to green light, less to red and least to blue.
– Bob Cross
Feb 27 '09 at 19:28
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MySQL “Group By” and “Order By”
...olumns in a SELECT with a GROUP BY clause is non-standard. MySQL will generally return the values of the first row it finds and discard the rest. Any ORDER BY clauses will only apply to the returned column value, not to the discarded ones.
IMPORTANT UPDATE
Selecting non-aggregate columns used to wor...
Commenting code in Notepad++
...opypaste a piece of code to a new file without specifying the language manually - or - it contains a mix of languages (eg. inline SQL in Python code), the block comment/uncomment will not work.
– Juha Untinen
Apr 22 '16 at 6:50
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How do I get the day of week given a date?
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Calendar math generally sucks because computers don't know what PTO is. In an effort to avoid teaching them I highly recommend obfuscating functions which determine whether it is currently a holiday or weekend.
– meawoppl...
How do I turn a String into a InputStreamReader in java?
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ByteArrayInputStream also does the trick:
InputStream is = new ByteArrayInputStream( myString...
Determine the path of the executing BASH script [duplicate]
...you're executing is aliased (through alias in .bash_profile). You should really use $BASH_SOURCE variable, instead of $0.
– Dmitri Sologoubenko
Feb 27 '15 at 12:45
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Multiple commands on a single line in a Windows batch file
...t the issue.
– Joey
Jan 19 '12 at 7:32
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Write string to text file and ensure it always overwrites the existing content.
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Use the File.WriteAllText method. It creates the file if it doesn't exist and overwrites it if ...
What is the difference between Android margin start/end and right/left?
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– Martin Marconcini
Jun 11 '15 at 17:32
@MartínMarconcini: Hopefully start/end take precedence, but I don't know that ...