大约有 38,000 项符合查询结果（耗时：0.0696秒） [XML]
Is there a REAL performance difference between INT and VARCHAR primary keys?
...dex)) ENGINE=InnoDB;
Then, I filled 10 million rows in each table with a PHP script whose essence is like this:
$pdo = get_pdo();
$keys = [ 'alabam', 'massac', 'newyor', 'newham', 'delawa', 'califo', 'nevada', 'texas_', 'florid', 'ohio__' ];
for ($k = 0; $k < 10; $k++) {
for ($j = 0; $j ...
Unable to find valid certification path to requested target - error even after cert imported
...InstallCert.Java and JDK
source: http://www.java-samples.com/showtutorial.php?tutorialid=210
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Open file via SSH and Sudo with Emacs
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and now added to wikemacs as well wikemacs.org/index.php/TRAMP. Thanks phils, it works great.
– Ehvince
Jul 24 '13 at 10:14
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How to encode the filename parameter of Content-Disposition header in HTTP?
...u want, you don't need any extra headers!
This trick works:
/real_script.php/fake_filename.doc
And if your server supports URL rewriting (e.g. mod_rewrite in Apache) then you can fully hide the script part.
Characters in URLs should be in UTF-8, urlencoded byte-by-byte:
/mot%C3%B6rhead # mot...
API Keys vs HTTP Authentication vs OAuth in a RESTful API
...I, then use oAuth.
Here's a good description: http://www.srimax.com/index.php/do-you-need-api-keys-api-identity-vs-authorization/
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Clicking the text to select corresponding radio button
I'm creating a quiz web application using PHP. Each question is comprised of a separate <label> and has 4 possible choices, using radio buttons to allow the user to select his/her answer. The current HTML for a single question looks like:
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JOIN queries vs multiple queries
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@cHao says who? I just looked up SMF and phpBB and saw JOINs between 3 tables - if you add plugins or modifications they could easily add to that. Any sort of large application has the potential for many JOINs. Arguably a poorly written/mis-used ORM could JOIN table...
Why should I care that Java doesn't have reified generics?
...++ templates give you complete type safety, read this: kdgregory.com/index.php?page=java.generics.cpp
– kdgregory
Dec 18 '09 at 14:47
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Exotic architectures the standards committees care about
...gisters spilled to memory at the C compiler's whim. blog.frama-c.com/index.php?post/2011/03/03/cosine-for-real
– Pascal Cuoq
Aug 8 '11 at 17:18
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Error handling in getJSON calls
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Why not
getJSON('get.php',{cmd:"1", typeID:$('#typesSelect')},function(data) {
// ...
});
function getJSON(url,params,callback) {
return $.getJSON(url,params,callback)
.fail(function(jqXMLHttpRequest,textStatus,errorThrown) {
...