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How do I test if a string is empty in Objective-C?
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30 Answers
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Bundler: Command not found
I am hosting on a vps, ubuntu 10.04, rails 3, ruby and mysql installed correctly by following some tutorials. If I run bundle check or bundle install I get the error '-bash: bundle: command not found'. From gem list --local I see 'bundler (1.0.2, 1.0.0)' is installed.
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How can I pass a parameter to a setTimeout() callback?
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setTimeout(function() {
postinsql(topicId);
}, 4000)
You need to feed an anonymous function as a parameter instead of a string, the latter method shouldn't even work per the ECMAScript specification but browsers are just lenient. This is the proper solution, don't ever r...
Inserting a string into a list without getting split into characters
...f the list:
list.append('foo')
To insert at the beginning:
list.insert(0, 'foo')
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Why do we copy then move?
... being copied. And std::string does have a move constructor.
Unlike in C++03, in C++11 it is often idiomatic to take parameters by value, for the reasons I am going to explain below. Also see this Q&A on StackOverflow for a more general set of guidelines on how to accept parameters.
Why are...
javax.validation.ValidationException: HV000183: Unable to load 'javax.el.ExpressionFactory'
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Checking from shell script if a directory contains files
...ob # To include hidden files
files=(/some/dir/*)
if [ ${#files[@]} -gt 0 ]; then echo "huzzah"; fi
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How to sign an android apk file
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smac89
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answered Jan 31 '11 at 16:02
NanneNanne
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Why can a function modify some arguments as perceived by the caller, but not others?
... Aran-Fey
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answered Feb 22 '09 at 18:06
jfsjfs
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How can I get the ID of an element using jQuery?
...t;div id="test"></div>
Or through the DOM:
$('#test').get(0).id;
or even :
$('#test')[0].id;
and reason behind usage of $('#test').get(0) in JQuery or even $('#test')[0] is that $('#test') is a JQuery selector and returns an array() of results not a single element by its defaul...