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How to add an extra column to a NumPy array
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@Outlier you should post a new question rather than ask one in the comments of this one.
– JoshAdel
Dec 10 '14 at 16:37
4
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Want to find records with no associated records in Rails
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This is still pretty close to SQL, but it should get everyone with no friends in the first case:
Person.where('id NOT IN (SELECT DISTINCT(person_id) FROM friends)')
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improv...
Integer.toString(int i) vs String.valueOf(int i)
... of doing the same thing. It may be a historical reason (can't remember if one came before the other).
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follow
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Vim: Replacing a line with another one yanked before
...ak at the end
Move to the start of the target line.
V, p – replace just one target line
c, c, Ctrlr, 0, Esc
Qt events and signal/slots
...ferred queue is the same as the queue event loop, or it exists two queues? one for deffered signals and on for event ?
– Guillaume07
Dec 10 '11 at 23:25
29
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PHP case-insensitive in_array function
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you can use preg_grep():
$a= array(
'one',
'two',
'three',
'four'
);
print_r( preg_grep( "/ONe/i" , $a ) );
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How do I lowercase a string in C?
...(int i = 0; str[i]; i++){
str[i] = tolower(str[i]);
}
or if you prefer one liners, then you can use this one by J.F. Sebastian:
for ( ; *p; ++p) *p = tolower(*p);
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Why should I use a pointer rather than the object itself?
...g from a Java background and have started working with objects in C++. But one thing that occurred to me is that people often use pointers to objects rather than the objects themselves, for example this declaration:
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Why does ReSharper tell me “implicitly captured closure”?
...R# warning.
@splintor
As in C# the anonymous methods are always stored in one class per method there are two ways to avoid this:
Use an instance method instead of an anonymous one.
Split the creation of the lambda expressions into two methods.
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What exactly is an Assembly in C# or .NET?
...name, culture, referenced assemblies and so forth.
In 99% of your cases, one assembly equals a physical file on disk - the case of a multi-file assembly (one assembly, distributed across more than a single file) appears to be a rather odd-ball edge case which I've never encountered so far in my 5+...