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Why does PostgreSQL perform sequential scan on indexed column?
...current one- an index scan fetches one page at once. (A bitmap scan does a compromise between the two, you usually see that appearing in a plan for queries that aren't selective enough for an index scan, but still not so unselective as to merit a full table scan)
– araqnid
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getenv() vs. $_ENV in PHP
...itive manner. Most of the time it probably doesn't matter, but one of the comments on the documentation explains:
For example on Windows $_SERVER['Path'] is like you see, with the first letter capitalized, not 'PATH' as you might expect.
Because of that, I would probably opt to use getenv un...
How to display hidden characters by default (ZERO WIDTH SPACE ie. ​)
...ch abnormalities. It is called Zero Width Characters locator and you're welcome to give it a try.
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How to forward declare a C++ template class?
...e with the forward declaration and defaults in the definition successfully compiles and run. Are you sure about what you are claiming? Can you provide a quote from the standard?
– olek stolar
Aug 14 at 16:56
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How do I update zsh to the latest version?
...have been reversed. Now you have the option to --enable-etcdir See: github.com/Homebrew/homebrew-core/blob/master/Formula/…
– Jamie Folsom
Feb 6 '19 at 0:25
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How to make git-diff and git log ignore new and deleted files?
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When used with git log this will cause it to completely ignore commits which only add and/or remove files.
– qqx
Jul 20 '13 at 13:50
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how to add records to has_many :through association in rails
... That has to be the most elegant solution to this problem I've come across. +1 for you.
– Daniel Bonnell
Feb 9 '16 at 17:27
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Should the .gradle folder be added to version control?
...pecific data in there
there's a lot of churn in there (you'd be constantly committing changes to files in there)
everything in there can be completely re-generated whenever it is needed anyway
It's basically a temp directory that Gradle is dropping in the middle of your source code (why Gradle thi...
Providing a default value for an Optional in Swift?
...}
}
Then you can just do:
optionalValue.or(defaultValue)
However, I recommend sticking to the ternary operator as other developers will understand that much more quickly without having to investigate the or method
Note: I started a module to add common helpers like this or on Optional to swift...
Why can I not push_back a unique_ptr into a vector?
...t then one must take into account that the address of the local variable becomes invalid at the end of the scope.
– UncleBens
Jul 19 '10 at 18:39
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