大约有 30,000 项符合查询结果(耗时:0.0302秒) [XML]

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Is “double hashing” a password less secure than just hashing it once?

...ions, but the idea is the same. Bcrypt also goes a step beyond most PBKDF2-based solutions by using the derived key to encrypt a well-known plain text. The resulting cipher text is stored as the "hash," along with some meta-data. However, nothing stops you from doing the same thing with PBKDF2. Her...
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How can I use optional parameters in a T-SQL stored procedure?

... Dynamically changing searches based on the given parameters is a complicated subject and doing it one way over another, even with only a very slight difference, can have massive performance implications. The key is to use an index, ignore compact code, i...
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Use basic authentication with jQuery and Ajax

...ion (xhr) { xhr.setRequestHeader(“Authorization”, “Basic ” + encodeBase64 (“username:password”) );}, succes: function(val) { //alert(val); alert("Thanks for your comment!"); } }); ` – Patrioticcow Mar 31 '11 at 23:07 ...
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PHP Regex to get youtube video ID?

... Based on bokor's comment on Anthony's answer: preg_match("/^(?:http(?:s)?:\/\/)?(?:www\.)?(?:m\.)?(?:youtu\.be\/|youtube\.com\/(?:(?:watch)?\?(?:.*&)?v(?:i)?=|(?:embed|v|vi|user)\/))([^\?&\"'>]+)/", $url, $matches...
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Flattening a shallow list in Python [duplicate]

...Lott: You inspired me to write a timeit app. I figured it would also vary based on the number of partitions (number of iterators within the container list) -- your comment didn't mention how many partitions there were of the thirty items. This plot is flattening a thousand items in every run, with ...
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How can I export tables to Excel from a webpage [closed]

...de for those browser that do not support it. You may also need to perform base64 encoding on the data URI content, which may require a js library, as well as adding the string ';base64' after the mime type in the data URI. ...
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Complex CSS selector for parent of active child [duplicate]

Is there a way to select a parent element based on the class of a child element in the class? The example that is relevant to me relating to HTML output by a nice menu plugin for http://drupal.org . The output renders like this: ...
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Image inside div has extra space below the image

...m: 10px; } #align-middle img { vertical-align: middle; } #align-base img { vertical-align: bottom; } #display img { display: block; } <div id="default"> <h1>Default</h1> The quick brown fox jumps over the lazy dog <img src="https://upload.wikimedia.org...
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Java GUI frameworks. What to choose? Swing, SWT, AWT, SwingX, JGoodies, JavaFX, Apache Pivot? [close

...s in the lack of complex UI components like tree tables. There is a webkit-based component to display HTML. When it was introduced, my first thought was "five years too late." If your aim is a nice app for phones or web sites, good. If your aim is professional desktop application, make sure it deli...
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Draw in Canvas by finger, Android

... Start By going through the Fingerpaint demo in the sdk sample. Another Sample: public class MainActivity extends Activity { DrawingView dv ; private Paint mPaint; @Override protected void onCreate(Bundle savedInstanceState) { super...