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Is it safe to push_back an element from the same vector?
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I'm upvoting now as this is my recollection as well, but a reference is needed.
– bames53
Sep 13 '13 at 14:55
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How to concatenate string variables in Bash
...aces, tabulations and/or newlines
printf -v foo "%s World" "$foo"
Shell now
Under POSIX shell, you could not use bashisms, so there is no builtin printf.
Basically
But you could simply do:
foo="Hello"
foo="$foo World"
echo $foo
Hello World
Formatted, using forked printf
If you want to use ...
The difference between try/catch/throw and try/catch(e)/throw e
...nless you are simply using this to log the exceptions, should be avoided). Now look at these:
try { ... }
catch ()
{
/* ... */
throw;
}
try { ... }
catch (Exception e)
{
/* ... */
throw;
}
try { ... }
catch (Exception e)
{
/* ... */
throw e;
}
The first and second try-ca...
moment.js - UTC gives wrong date
... string in the local time zone of the browser by default. I'm on EDT right now. new Date('2010-12-12') gives me Date {Sat Dec 11 2010 19:00:00 GMT-0500 (Eastern Daylight Time)} in FF 38.0.5. Just to contextualize what "in the local time" means, exactly -- in this case, it appears to mean, "Date will...
How can I get a Dialog style activity window to fill the screen?
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Thanks, saved my time , nowhere I would have figured this out ! but any idea why we have to explicitly specify in code , why fill_parent does not work through xml for activities with theme dialog ?
– sat
Feb 8 ...
What is meant by “managed” vs “unmanaged” resources in .NET?
...lightly: an "unmanaged resource" is something the garbage-collector won't know how to clean up after if it's abandoned. A short-lived object's subscription to an event from a long-lived object, for example, would be an unmanaged resource even though both objects are under the control of the garbage-...
How do I find the location of Python module sources?
...? I understand where crawling sys.path can be painful (especially without knowing about meta_path), but is your concern about namespacing between __file__ definitions and binaries?
– user559633
Jan 6 '15 at 15:56
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Use of def, val, and var in scala
...cala> def something = 2 + 3 * 4
something: Int
scala> something // now it's evaluated, lazily upon usage
res30: Int = 14
Example, val
scala> val somethingelse = 2 + 3 * 5 // it's evaluated, eagerly upon definition
somethingelse: Int = 17
Example, var
scala> var aVariable = 2 * 3...
What does the (unary) * operator do in this Ruby code?
...ame, mouse, country, usa. Then the splat is used to make that into a Hash. Now the Ruby people always send you to look at the Splat method, since everything is exposed in Ruby. I have no idea where it is, but once you have that, you'll see that it runs a for through the array and builds the hash.
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Currency formatting in Python
... @mrooney: You can just do: '${:0,.2f}'.format(184467616.1), and you now have the symbol
– triunenature
Sep 30 '15 at 23:55
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