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What is a word boundary in regex?
...Correctamundo. \b is a zero-width assertion that matches if there is \w on one side, and either there is \W on the other or the position is beginning or end of string. \w is arbitrarily defined to be "identifier" characters (alnums and underscore), not as anything especially useful for English.
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How can I create a temp file with a specific extension with .NET?
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(To quote from the wiki article on the probabilty of a collision:
...one's annual risk of being hit by a
meteorite is estimated to be one
chance in 17 billion [19], that means
the probability is about 0.00000000006
(6 × 10−11), equivalent to the odds of
creating a few tens of tril...
Circle-Rectangle collision detection (intersection)
... the rectangle:
Either the circle's centre lies inside the rectangle, or
One of the edges of the rectangle has a point in the circle.
Note that this does not require the rectangle to be axis-parallel.
(One way to see this: if none of the edges has a point in the circle (if all the edges are ...
The multi-part identifier could not be bound
...to be aware of how to do that properly.
The thing is, explicit joins (the ones that are implemented using the JOIN keyword) take precedence over implicit ones (the 'comma' joins, where the join condition is specified in the WHERE clause).
Here's an outline of your query:
SELECT
…
FROM a, b LE...
How to justify a single flexbox item (override justify-content)
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What if I want one item to be on the left, and the other one in the center?
– Fahmi
Jan 18 '18 at 3:48
4
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Why should text files end with a newline?
I assume everyone here is familiar with the adage that all text files should end with a newline. I've known of this "rule" for years but I've always wondered — why?
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Array or List in Java. Which is faster?
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One of the issues with performance measurement is that you constantly have to retest against new versions of Java. I am working on a problem at the moment where someone used an int throughout for a key in a map (to save space...
Switch statement for greater-than/less-than
...e fastest in all tested environments except
for Opera where it takes about one and a half times as long. It is slow because the engine
has to compare the value twice for each case. Surprisingly it takes Chrome almost 40 times longer to complete this compared to the fastest operation in Chrome, while...
How do I do redo (i.e. “undo undo”) in Vim?
..., or, if you remember the difference between current undo state and needed one, use Nh, Nm or Ns for hours, minutes and seconds respectively. + :later N<CR> <=> Ng+ and :later Nf for file writes.
share
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git: Apply changes introduced by commit in one repo to another repo
...t doesn't know that the alternate object repository is only temporary, for one operation. You might need to copy objects from the second repository with:
GIT_ALTERNATE_OBJECT_DIRECTORIES=../repo/.git/objects git repack -a -d -f
This puts those objects borrowed from second repository in original r...