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JavaScript: Upload file
... type="file" onchange="SavePhoto(this)" >
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Before selecting the file open chrome console > network tab to see the request details.
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<small>Because in this example we send request to https://stacksnippets.net/upload/image the response code will ...
如何选择机器学习算法 - 大数据 & AI - 清泛网移动版 - 专注C/C++及内核技术
...aking sure to try different parameters within each algorithm as well), and select the best one by cross-validation. But if you’re simply looking for a “good enough” algorithm for your problem, or a place to start, here are some general guidelines I’ve found to work well over the year...
How to remove non-alphanumeric characters?
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[\W_]+
$string = preg_replace("/[\W_]+/u", '', $string);
It select all not A-Z, a-z, 0-9 and delete it.
See example here: https://regexr.com/3h1rj
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Is there a use-case for singletons with database access in PHP?
...all one needs to maintain multiple database connections, multiple database selections, multiple database queries, multiple result sets in a given singleton is just keeping them in variables/arrays in the singleton as long as they are needed. This can be as simple as keeping them in arrays, though yo...
Hidden features of Eclipse [closed]
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in the same vein select a word and hit ctrl-k or ctrl-shift-k and it will iterate through the selected string occurences
– Newtopian
Jun 8 '10 at 12:00
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How to search for occurrences of more than one space between words in a line
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This regex selects all spaces, you can use this and replace it with a single space
\s+
example in python
result = re.sub('\s+',' ', data))
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How do I get the first element from an IEnumerable in .net?
...IEnumberable<string> aa;
string a = (from t in aa where t.Equals("") select t.Value).ToArray()[0];
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How to update gradle in android studio?
...Build Tools→Gradle→Use default Gradle wrapper (recommended)
Step 2 (Select desired gradle version)
File→Project Structure→Project
The following table shows compatibility between Android plugin for Gradle and Gradle:
Latest stable versions you can use with Android Studio 4.0.1 (July 2020):...
What is HEAD in Git?
...sitory
can contain any number of heads. At
any given time, one head is selected
as the “current head.” This head is
aliased to HEAD, always in capitals".
Note this difference: a “head”
(lowercase) refers to any one of the
named heads in the repository; “HEAD”
(uppercas...
What is the Auto-Alignment Shortcut Key in Eclipse?
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Ctrl+Shift+F to invoke the Auto Formatter
Ctrl+I to indent the selected part (or all) of you code.
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