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Why is using “for…in” for array iteration a bad idea?
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PHP 5: const vs static
...he value but the variable will only be initialized once. See stackoverflow.com/questions/203336/… for further explanation how to create a singleton. For me those are some situations in which I prefer static variables.
– Erik van de Ven
Jun 21 '16 at 9:07
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What is an initialization block?
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@Pacerier So you can have common code when having multiple constructors without having to use an init() method (which someone updating the class may forget to call it)
– pablisco
Aug 19 '16 at 10:28
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Linking static libraries to other static libraries
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49
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Null coalescing in powershell
...: "this value returned"
Previous Versions:
No need for the Powershell Community Extensions, you can use the standard Powershell if statements as an expression:
variable = if (condition) { expr1 } else { expr2 }
So to the replacements for your first C# expression of:
var s = myval ?? "new va...
How to disassemble one single function using objdump?
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+1 undocumented feature! -ex 'command' isn't in man gdb!? But is in fact listed in gdb docs. Also for others, stuff like /bin/ls might be stripped, so if that exact command displays nothing, try another object! Can also specify file/object as bareword arg...
How to set or change the default Java (JDK) version on OS X?
...u’re using, and the configuration you have in place, so I can’t give a complete solution for that…
– markhellewell
Nov 14 '14 at 2:25
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Delete rows from a pandas DataFrame based on a conditional expression involving len(string) giving K
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I came up with a way using a list comprehension: df[[(len(x) < 2) for x in df['column name']]] but yours is much nicer. Thanks for your help!
– sjs
Dec 13 '12 at 4:17
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Select SQL Server database size
... , backup_size =
CAST(CASE WHEN s.backup_size = s.compressed_backup_size
THEN s.backup_size
ELSE s.compressed_backup_size
END / 1048576.0 AS DECIMAL(18,2))
, RowNum = ...
Getting attributes of a class
..._') and a[0].endswith('__'))]
[('a', '34'), ('b', '12')]
...and the more complicated of which can include special attribute name checks or even metaclasses ;)
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