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In Python, how do I create a string of n characters in one line of code?
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SQLite add Primary Key
...ething that one of the commenters said, however your comment contains no information at all, beside an apparent intent to convey superiority and snark.
– Nathan Ridley
May 5 '18 at 20:57
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Show filename and line number in grep output
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Rails: How can I set default values in ActiveRecord?
...ations on lookup. Start initialize with return if !new_record? to avoid performance issues.
– Kyle Macey
Apr 2 '13 at 15:01
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Count the occurrences of DISTINCT values
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Just changed Amber's COUNT(*) to COUNT(1) for the better performance.
SELECT name, COUNT(1) as count
FROM tablename
GROUP BY name
ORDER BY count DESC;
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push_back vs emplace_back
...nction void emplace_back(Type&& _Val) provided by MSCV10 is non conforming and redundant, because as you noted it is strictly equivalent to push_back(Type&& _Val).
But the real C++0x form of emplace_back is really useful: void emplace_back(Args&&...);
Instead of taking a va...
Java Pass Method as Parameter
...da expression consists of the following:
A comma-separated list of formal parameters enclosed in parentheses. The CheckPerson.test method contains one parameter, p,
which represents an instance of the Person class.Note: You
can omit the data type of the parameters in a lambda expression....
handlerbars.js check if list is empty
...
The "each" tag can take an "else" section too. So the simplest form is:
{{#each items}}
// render item
{{else}}
// render empty
{{/each}}
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How to construct a set out of list items in python?
... on darwin Type "help", "copyright", "credits" or "license" for more information. >>> x = [1,2,3] >>> set(x) set([1, 2, 3]) >>>
– opus111
Dec 20 '17 at 18:49
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Is there an equivalent of 'which' on the Windows command line?
...ted to PATH since you can substitute any environment variable (in the path format, of course) that you wish to use.
And, if you want one that can handle all the extensions in PATHEXT (as Windows itself does), this one does the trick:
@echo off
setlocal enableextensions enabledelayedexpansion
::...