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what is the difference between ?:, ?! and ?= in regex?
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The difference between ?= and ?! is that the former requires the given expression to match and...
NSDictionary - Need to check whether dictionary contains key-value pair or not
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194
Just ask it for the objectForKey:@"b". If it returns nil, no object is set at that key.
if (...
Why does make think the target is up to date?
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edited May 30 '12 at 6:43
answered Oct 14 '10 at 9:30
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Android Split string
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612
String currentString = "Fruit: they taste good";
String[] separated = currentString.split(":");...
Ruby on Rails: How do I add placeholder text to a f.text_field?
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With rails >= 3.0, you can simply use the placeholder option.
f.text_field :attr, placeholde...
Are C++ enums signed or unsigned?
... that it is = your min value (assuming you started at 0 and incremented by 1)?
9 Answers
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SQL exclude a column using SELECT * [except columnA] FROM tableA?
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41 Answers
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Active
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How to check if a value exists in a dictionary (python)
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>>> d = {'1': 'one', '3': 'three', '2': 'two', '5': 'five', '4': 'four'}
>>> 'one' in d.values()
True
Out of curiosity, some comparative timing:
>>> T(lambda : 'one' in d.itervalues()).repeat()
[0.28107285499572754...
Adding two Java 8 streams, or an extra element to a stream
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If you add static imports for Stream.concat and Stream.of, the first example could be written ...