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Static member functions error; How to properly write the signature?
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I'm guessing you've done something like:
class Foo
{
static void Bar();
};
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static void Foo::Bar()
{
...
}
The "static void Foo::Bar" is incorrect. You don't need the second "static".
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What specifically are wall-clock-time, user-cpu-time, and system-cpu-time in UNIX?
I can take a guess based on the names, but what specifically are wall-clock-time, user-cpu-time, and system-cpu-time in UNIX?
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What are the differences between “=” and “
... The operator <- can be used anywhere,
whereas the operator = is only allowed at the top level (e.g.,
in the complete expression typed at the command prompt) or as one
of the subexpressions in a braced list of expressions.
Let’s not put too fine a point on it: the R documentation is (su...
How to set a value to a file input in HTML?
...g/drop event on other elements. See How to set file input value programatically (i.e.: when drag-dropping files)?
– Samuel Liew♦
Nov 29 '17 at 22:01
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How to attribute a single commit to multiple developers?
The way all version control systems I'm familiar with work is that each commit is attributed to a single developer. The rise of Agile Engineering, and specifically pair programming, has lead to a situation where two developers have made a significant contribution to the same task, a bug fix for exam...
How do you get the Git repository's name in some Git repository?
...the sed command to also work when the origin url does not end in .git? so 'foo.git' becomes 'foo', but 'foo' is also matched? I guess we need non-greedy matching?
– Arnout Engelen
Nov 13 '15 at 16:38
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#if DEBUG vs. Conditional(“DEBUG”)
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It really depends on what you're going for:
#if DEBUG: The code in here won't even reach the IL on release.
[Conditional("DEBUG")]: This code will reach the IL, however calls to the method will be omitted unless DEBUG is set whe...
How to stop a goroutine
I have a goroutine that calls a method, and passes returned value on a channel:
6 Answers
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Rails 3 check if attribute changed
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Check out ActiveModel::Dirty (available on all models by default). The documentation is really good, but it lets you do things such as:
@user.street1_changed? # => true/false
share
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Why are empty strings returned in split() results?
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I was shocked to discover that curly quotes are actually valid in Python...but, but...how? The docs don't seem to mention this.
– Tim Pietzcker
Oct 8 '12 at 11:18
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