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What is declarative programming? [closed]
... when you write your code in such a way that it describes what you want to do, and not how you want to do it. It is left up to the compiler to figure out the how.
Examples of declarative programming languages are SQL and Prolog.
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How do I list one filename per output line in Linux?
...pports -1. GNU coreutils (installed on standard Linux systems) and Solaris do; but if in doubt, use man ls or ls --help or check the documentation. E.g.:
$ man ls
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-1 list one file per line. Avoid '\n' with -q or -b
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Django: multiple models in one template using forms [closed]
...d()
b_valid = formB.is_valid()
c_valid = formC.is_valid()
# we do this since 'and' short circuits and we want to check to whole page for form errors
if a_valid and b_valid and c_valid:
a = formA.save()
b = formB.save(commit=False)
c = formC.save(commit=False)
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Angularjs loading screen on ajax request
...variable to indicate data loading status, it is better to have a directive does everything for you:
angular.module('directive.loading', [])
.directive('loading', ['$http' ,function ($http)
{
return {
restrict: 'A',
link: function (scope, elm, attrs)
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How do I simulate a low bandwidth, high latency environment?
... preference pane is part of the Hardware IO Tools for XCode, which you can download from developer.apple.com/downloads
– avernet
Feb 4 '13 at 19:10
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How do I remove duplicate items from an array in Perl?
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You can do something like this as demonstrated in perlfaq4:
sub uniq {
my %seen;
grep !$seen{$_}++, @_;
}
my @array = qw(one two three two three);
my @filtered = uniq(@array);
print "@filtered\n";
Outputs:
one two three...
Why would anybody use C over C++? [closed]
...ble to find much evidence as to why you would want to choose C over C++. C doesn't seem to get nearly as much flak and if C++ has all these problems why can't you just restrict yourself to the C subset? What are your thoughts/experience?
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How do you serve a file for download with AngularJS or Javascript?
...xtarea. When a button is clicked I would like to have the text offered for download as a .txt file. Is this possible using AngularJS or Javascript?
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Why call git branch --unset-upstream to fixup?
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TL;DR version: remote-tracking branch origin/master used to exist, but does not now, so local branch source is tracking something that does not exist, which is suspicious at best—it means a different Git feature is unable to do anything for you—and Git is warning you about it. You have been...
How do I remove all specific characters at the end of a string in PHP?
How do I remove the last character only if it's a period?
9 Answers
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