大约有 30,000 项符合查询结果(耗时:0.0392秒) [XML]

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How to get the first non-null value in Java?

Is there a Java equivalent of SQL's COALESCE function? That is, is there any way to return the first non-null value of several variables? ...
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Right HTTP status code to wrong input

What is opti<em>mem>al HTTP response Code when not reporting 200 (everything OK) but error in input? 6 Answers ...
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AngularJs $http.post() does not send data

Could anyone tell <em>mem>e why the following state<em>mem>ent does not send the post data to the designated url? The url is called but on the server when I print $_POST - I get an e<em>mem>pty array. If I print <em>mem>essage in the console before adding it to the data - it shows the correct content. ...
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Why I can't change directories using “cd”?

I'<em>mem> trying to write a s<em>mem>all script to change the current directory to <em>mem>y project directory: 31 Answers ...
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Re<em>mem>oving event listener which was added with bind

In JavaScript, what is the best way to re<em>mem>ove a function added as an event listener using bind()? 9 Answers ...
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How to change <em>mem>aven logging level to display only warning and errors?

I want to prevent <em>mem>aven fro<em>mem> displaying INFO <em>mem>essages, I want to see only WARNINGS and ERRORS (if any). 10 Answers ...
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jQuery 'input' event

I've never heard of an event in jQuery called input till I saw this jsfiddle . 8 Answers ...
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Call a controller function fro<em>mem> a directive without isolated scope in AngularJS

I cannot see<em>mem> to find a way to call a function on the parent scope fro<em>mem> within a directive without using isolated scope. I know that if I use isolated scope I can just use "&a<em>mem>p;" in the isolated to access the function on the parent scope, but using isolated scope when it isn't necessary has consequence...
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How to create a self-signed certificate with OpenSSL

I'<em>mem> adding HTTPS support to an e<em>mem>bedded Linux device. I have tried to generate a self-signed certificate with these steps: ...
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Detect browser or tab closing

Is there any cross-browser JavaScript/jQuery code to detect if the browser or a browser tab is being closed, but not due to a link being clicked? ...