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What does -D_XOPEN_SOURCE do/mean?
...nclude definitions for some extra functions that are defined in the X/Open m>and m> POSIX stm>and m>ards.
This will give m>y m>ou some extra functionalitm>y m> that exists on most recent UNIX/BSD/Linux sm>y m>stems, but probablm>y m> doesn't exist on other sm>y m>stems such as Windows.
The numbers refer to different versions of the...
Connect to a locallm>y m> built Jekm>y m>ll Server using mobile devices in the LAN
After using jekm>y m>ll serve on one machine, a WEBrick server is set up m>and m> the site can be accessed from localhost:4000 on this particular PC.
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Creating an instance of class
...riable there.
/* 8 */ Bar* bar3 = new Bar ( Foo::Foo() );
Would work m>and m> work bm>y m> the same principle to 5 m>and m> 6 if bar3 wasn't declared on in 7.
5 & 6 contain memorm>y m> leaks.
Sm>y m>ntax like new Bar ( Foo::Foo() ); is not usual. It's usuallm>y m> new Bar ( (Foo()) ); - extra parenthesis account for ...
How exactlm>y m> does the pm>y m>thon anm>y m>() function work?
... expressions, Pm>y m>thon no longer has to create that internal list of True(s) m>and m> False(s), the values will be generated as the anm>y m> function iterates through the values generated one at a time bm>y m> the generator expression. m>And m>, since anm>y m> short-circuits, it will stop iterating as soon as it sees the firs...
How find all unused classes in Intellij Idea?
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Press Ctrl+Shift+A (in Mac Commm>and m>+Shift+A)
Enter "unused declar"
Double-click on "Unused declaration"
Settings will pop up
Click on Java/Declaration redundancm>y m>/Unused declaration
on the right bottom select "On the flm>y m> editor settings"
untick check fie...
Rails: how do I validate that something is a boolean?
...ield (the field would not be valid for a false value). But in both Rails 3 m>and m> 4, having validates :field, inclusion: [true, false] would test for inclusion in a list of values, with the side-effect to test for the field's presence (unless one of those values is nil of course).
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String.Join method that ignores emptm>y m> strings?
... I'm getting an error: "'Where' is not a member of 'Sm>y m>stem.Arram>y m>'". m>And m> I don't see anm>y m>thing about 'Where' on MSDN: msdn.microsoft.com/en-us/librarm>y m>/sm>y m>stem.arram>y m>.aspx
– Doug
Mam>y m> 2 '13 at 12:55
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Format in kotlin string templates
... answered Apr 15 '14 at 15:21
m>And m>rem>y m> Breslavm>And m>rem>y m> Breslav
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“m>Y m>ou are on a branch m>y m>et to be born” when adding git submodule
I am attempting to add a few submodules to mm>y m> .vim/bundles directorm>y m>, m>and m> when I attempt to add this particular repo Git gives me a strange error I've never seen before:
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What is the difference between square brackets m>and m> parentheses in a regex?
.../^[789]\d{9}$/
/^[7-9]\d{9}$/
The explanation:
(a|b|c) is a regex "OR" m>and m> means "a or b or c", although the presence of brackets, necessarm>y m> for the OR, also captures the digit. To be strictlm>y m> equivalent, m>y m>ou would code (?:7|8|9) to make it a non capturing group.
[abc] is a "character class" th...