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Count number of occurrences of a pattern in a file (even on same line)
...bar) the searching stops. Only one line was checked and it matched, so the output is 1. Actually -o is ignored here and you could just use grep -c instead.
2.
$ echo afoobarfoobar | grep -o foo
foo
foo
$ echo afoobarfoobar | grep -o foo | wc -l
2
Two matches are found in the line (a{foo}bar{foo...
How to convert int to QString?
Is there a QString function which takes an int and outputs it as a QString ?
8 Answers
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when I run mockito test occurs WrongTypeOfReturnValue Exception
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Worked out for me. Obrigado!
– Saxophonist
Mar 10 at 14:00
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Change the name of a key in dictionary
...', 'z':'c'}
In [10]: dict((d1[key], value) for (key, value) in d.items())
Out[10]: {'a': 1, 'b': 2, 'c': 3}
if you want to change single key:
You can go with any of the above suggestion.
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How do you extract a column from a multi-dimensional array?
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check it out!
a = [[1, 2], [2, 3], [3, 4]]
a2 = zip(*a)
a2[0]
it is the same thing as above except somehow it is neater
the zip does the work but requires single arrays as arguments, the *a syntax unpacks the multidimensional array...
In c# what does 'where T : class' mean?
.../ T must implement the IComparable interface
For more information, check out MSDN's page on the where clause, or generic parameter constraints.
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Sorting rows in a data table
... you can modify the DataTable.DefaultView.Sort directly. No need to "break out" the view and recreate a table.
– Jonny
Oct 20 '16 at 11:16
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How to hide underbar in EditText
...h the 9-patch that is used for normal EditText fields. Modify it to strip out the underbar and other graphics you don't want. With this, your modified EditText will have the same margins and overall appearance as normal EditText fields. If you simply set the background to null, it will lose the m...
Declare and Initialize String Array in VBA
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What about Dim myStringArray() As String ... myStringArray = Array( "Cat", "Dog" , "Rabbit"). Variants - yuck!
– Andez
Sep 19 '14 at 10:03
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When is assembly faster than C?
...t multiplies on old compilers.
These don't only come handy on devices without floating point, they shine when it comes to precision as they give you 32 bits of precision with a predictable error (float only has 23 bit and it's harder to predict precision loss). i.e. uniform absolute precision over...