大约有 30,000 项符合查询结果(耗时:0.0380秒) [XML]

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Selectors in Objective-C?

First, I'<em>mem> not sure I really understand what a selector is. Fro<em>mem> <em>mem>y understanding, it's the na<em>mem>e of a <em>mem>ethod, and you can assign it to a class of type 'SEL' and then run <em>mem>ethods such as respondToSelector to see if the receiver i<em>mem>ple<em>mem>ents that <em>mem>ethod. Can so<em>mem>eone offer up a better explanation? ...
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iOS - Calling App Delegate <em>mem>ethod fro<em>mem> ViewController

What I a<em>mem> trying to do is click a button (that was created in code) and have it call up a different view controller then have it run a function in the new view controller. ...
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What character to use to put an ite<em>mem> at the end of an alphabetic list?

I often prepend ' _ ' to the ite<em>mem> I want in first position. Is there so<em>mem>e sort of <em>mem>agical character I could use to put an ite<em>mem> at the end of the list? ...
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Transport endpoint is not connected

FUSE is constantly (every 2 - 3 days) giving <em>mem>e this Transport endpoint is not connected error on <em>mem>y <em>mem>ount point and the only thing that see<em>mem>s to fix it is rebooting. ...
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Can an interface extend <em>mem>ultiple interfaces in Java?

Can an interface extend <em>mem>ultiple interfaces in Java? This code appears valid in <em>mem>y IDE and it does co<em>mem>pile: 7 Answers ...
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How <em>mem>any Activities vs Frag<em>mem>ents?

The basic "Frag<em>mem>ents Tutorial" pattern goes so<em>mem>ething like this: 5 Answers 5 ...
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Finding the index of an ite<em>mem> in a list

Given a list ["foo", "bar", "baz"] and an ite<em>mem> in the list "bar" , how do I get its index ( 1 ) in Python? 31 Answers ...
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Equation (expression) parser with precedence?

I've developed an equation parser using a si<em>mem>ple stack algorith<em>mem> that will handle binary (+, -, |, &a<em>mem>p;, *, /, etc) operators, unary (!) operators, and parenthesis. ...
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Python (and Python C API): __new__ versus __init__

The question I'<em>mem> about to ask see<em>mem>s to be a duplicate of Python's use of __new__ and __init__? , but regardless, it's still unclear to <em>mem>e exactly what the practical difference between __new__ and __init__ is. ...
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Regular Expressions: Is there an AND operator?

... Use a non-consu<em>mem>ing regular expression. The typical (i.e. Perl/Java) notation is: (?=expr) This <em>mem>eans "<em>mem>atch expr but after that continue <em>mem>atching at the original <em>mem>atch-point." You can do as <em>mem>any of these as you want, and this will be...