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List comprehension vs. lambda + filter
...on as you use a Python function (whether created by def or lambda) it is likely that filter will be slower than the list comprehension. It almost certainly is not enough to matter, and you shouldn't think much about performance until you've timed your code and found it to be a bottleneck, but the di...
LINQ where vs takewhile
I want to get a difference between TakeWhile & Where LINQ methods .I got the following data from MSDN .But It didn't make sense to me
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Linux - Replacing spaces in the file names
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Peter Mortensen
26.5k2121 gold badges9292 silver badges122122 bronze badges
answered Nov 27 '09 at 5:42
neeshneesh
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INSERT with SELECT
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Yes, absolutely, but check your syntax.
INSERT INTO courses (name, location, gid)
SELECT name, location, 1
FROM courses
WHERE cid = 2
You can put a constant of the same type as gid in its place, not just 1, of course. And, I just made up the c...
Union of dict objects in Python [duplicate]
How do you calculate the union of two dict objects in Python, where a (key, value) pair is present in the result iff key is in either dict (unless there are duplicates)?
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String contains - ignore case [duplicate]
Is it possible to determine if a String str1="ABCDEFGHIJKLMNOP" contains a string pattern strptrn="gHi" ? I wanted to know if that's possible when the characters are case insensitive. If so, how?
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Test if a command outputs an empty string
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Previously, the question asked how to check whether there are files in a directory. The following code achieves that, but see rsp's answer for a better solution.
Empty output
Commands don’t return values – they output them. You can capture thi...
Auto code completion on Eclipse
... to me all possible options, while I'm writing some variable/class name or keyword, like in Flash Develop or Visual Studio.
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All permutations of a Windows license key
... a Windows 8 upgrade for my laptop, for which I need the Windows 7 license key on the underside of the laptop.
6 Answers
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How do I reset a sequence in Oracle?
In PostgreSQL , I can do something like this:
18 Answers
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