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What is the difference between & and && in Java?

...& operator in Java is used for verifying whether both its boolean operands are true , and the & operator is used to do Bit-wise operations on two integer types. ...
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Detect Browser Language in PHP

... why dont you keep it simple and clean <?php $lang = substr($_SERVER['HTTP_ACCEPT_LANGUAGE'], 0, 2); $acceptLang = ['fr', 'it', 'en']; $lang = in_array($lang, $acceptLang) ? $lang : 'en'; require_once "index_{$lang}.php"; ?> ...
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Getting current date and time in JavaScript

I have a script that prints the current date and time in JavaScript, but the DATE is always wrong. Here is the code: 27 A...
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How to resize an image with OpenCV2.0 and Python2.6

I want to use OpenCV2.0 and Python2.6 to show resized images. I used and adopted this example but unfortunately, this code is for OpenCV2.1 and does not seem to be working on 2.0. Here my code: ...
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Pandas - Get first row value of a given column

...2 There is a difference between df_test['Btime'].iloc[0] (recommended) and df_test.iloc[0]['Btime']: DataFrames store data in column-based blocks (where each block has a single dtype). If you select by column first, a view can be returned (which is quicker than returning a copy) and the origina...
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Obfuscated C Code Contest 2006. Please explain sykes2.c

...char(32 | (b & 1)); } } Now, note that a[b] is the same as b[a], and apply the -~ == 1+ change again: main(int i) { if(i != 448) main(i+1); i--; if(i % 64 == 0) { putchar('\n'); } else { char a = (">'txiZ^(~z?"-48)[(__TIME__-i/8%8)[7]] + 1; ...
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How to compute the sum and average of elements in an array?

...he elements of an array as well as averaging them out. How would I do this and implement it with the code I currently have? The elements are supposed to be defined as I have it below. ...
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Set cURL to use local virtual hosts

... applies, but simply pretends the DNS lookup returned the data in your command-line option. It works just like /etc/hosts should. Note --resolve takes a port number, so for HTTPS you would use curl --resolve 'yada.com:443:127.0.0.1' https://yada.com/something ...
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Detect if Visual C++ Redistributable for Visual Studio 2012 is installed

... collected this info from a Windows 10 x64 box. I'm just going to go ahead and dump all of these redist versions and the reg keys I search for to detect installation.: Visual C++ 2005 Microsoft Visual C++ 2005 Redistributable (x64) Registry Key: HKLM\SOFTWARE\Classes\Installer\Products\1af2a8da7...
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Android Studio - local path doesn't exist

After updating Android Studio to 0.2.4 I can't get my project to deploy. There is a complete mismatch of the apk filename. ...