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Best way to store a key=>value array in JavaScript?
...rts it (IE9 and up), it is safer to create the empty object first with var foo = Object.create(null) and then add properties to it like foo.bar = "baz". Creating an object with {} is equivalent to Object.create(Object.prototype), which means that it inherits all properties of Object. Normally that i...
Can I grep only the first n lines of a file?
I have very long log files, is it possible to ask grep to only search the first 10 lines?
12 Answers
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How to get an array of unique values from an array containing duplicates in JavaScript? [duplicate]
Given a ['0','1','1','2','3','3','3'] array, the result should be ['0','1','2','3'] .
17 Answers
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How to pass anonymous types as parameters?
... (when extracting data) is to also pass a selector - i.e. something like:
Foo<TSource, TValue>(IEnumerable<TSource> source,
Func<TSource,string> name) {
foreach(TSource item in source) Console.WriteLine(name(item));
}
...
Foo(query, x=>x.Title);
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In Perl, how can I read an entire file into a string?
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local $foo = undef is just the Perl Best Practice (PBP) suggested method. If we are posting snippits of code I'd think doing our best to make it clear would be A Good Thing.
– Danny
Jun 5 '09 a...
Get the previous month's first and last day dates in c#
I can't think of an easy one or two liner that would get the previous months first day and last day.
10 Answers
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When to use -retainCount?
...1] would have a retainCount of 1. It doesn't. It's 2.
You'd think that @"Foo" would have a retainCount of 1. It doesn't. It's 1152921504606846975.
You'd think that [NSString stringWithString:@"Foo"] would have a retainCount of 1. It doesn't. Again, it's 1152921504606846975.
Basically, since ...
Keyboard shortcut to comment lines in Sublime Text 2
In Sublime Text 2 , how do I enclose a selection in a comment ?
Is there a keyboard shortcut for this action?
15 Answer...
Is it possible only to declare a variable without assigning any value in Python?
...ually going to assign to or use them. I think what you want to do is just
foo = None
which will assign the value None to the variable foo.
EDIT: What you really seem to want to do is just this:
#note how I don't do *anything* with value here
#we can just start using it right inside the loop
fo...
Does a “Find in project…” feature exist in Eclipse IDE?
Does Eclipse have a way to search a whole project for some text like Xcode's "find in project" feature?
16 Answers
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