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Weird PHP error: 'Can't use function return value in write context'
...empty($someVar)
Wrong:
empty(someFunc())
Since PHP 5.5, it supports more than variables. But if you need it before 5.5, use trim($name) == false. From empty documentation.
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Java8 Lambdas vs Anonymous classes
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Check if a Windows service exists and delete in PowerShell
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More recent versions of PS have Remove-WmiObject, and beware of silent fails for $service.delete() - have added another answer with formatted examples.
– Straff
May 3 '16 at 23:07
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Why can tuples contain mutable items?
...ir intended use:
Tuples are characterized less by their immutability and more by their intended purpose.
Tuples are Python's way of collecting heterogeneous pieces of information under one roof. For example,
s = ('www.python.org', 80)
brings together a string and a number so that the host/port ...
What does 'COLLATE SQL_Latin1_General_CP1_CI_AS' do?
...uld equal 'abc'
AS accent sensitive, so 'ü' does not equal 'u'
P.S. For more detailed information be sure to read @solomon-rutzky's answer.
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Random color generator
...String(16) will provide you a hexadecimal value. This is way faster and is more accurate way of producing color variations. Note the difference 16777215 and 16777216 . That is because we start to count at 0. So you have 16777216 different colors. but the maximum value is 16777215
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Determine if map contains a value for a key?
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How so? find indicates intent far better than count does. More over, count doesn't return the item. If you read the OP's question, he's wants to check for the existance, and return the element. find does that. count does not.
– Alan
May 23 '13 ...
How to limit setAccessible to only “legitimate” uses?
The more I learned about the power of java.lang.reflect.AccessibleObject.setAccessible , the more astonished I am at what it can do. This is adapted from my answer to the question ( Using reflection to change static final File.separatorChar for unit testing ).
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Does Python have a string 'contains' substring method?
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