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The “unexpected ++” error in jslint [duplicate]
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93
Use i += 1 instead, if you want to follow jslint's advice.
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Convert blob to base64
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answered Sep 6 '13 at 5:05
Arun KilluArun Killu
10.6k55 gold badges2828 silver badges5656 bronze badges
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Undefined reference to static class member
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edited Jan 4 '14 at 21:37
user529758
answered Nov 7 '08 at 17:57
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Preloading CSS Images
...; z-index:-1; // hide images
content:url(img1.png) url(img2.png) url(img3.gif) url(img4.jpg); // load images
}
Demo
it's better to use a sprite image to reduce http requests...(if there are many relatively small sized images) and make sure the images are hosted where HTTP2 is used.
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Passing an array by reference
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233
It's a syntax for array references - you need to use (&array) to clarify to the compiler th...
Downcasting in Java
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300
Downcasting is allowed when there is a possibility that it succeeds at run time:
Object o = g...
MySQL ON DUPLICATE KEY - last insert id?
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Check this page out: https://web.archive.org/web/20150329004325/https://dev.mysql.com/doc/refman/5.0/en/insert-on-duplicate.html
At the bottom of the page they explain how you can make LAST_INSERT_ID meaningful for updates by passing an expression to that MySQL function.
From t...
Any shortcut to initialize all array elements to zero?
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edited Feb 15 at 23:21
PHPoenX
10188 bronze badges
answered Jan 28 '10 at 12:09
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Best ways to teach a beginner to program? [closed]
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Fast way of counting non-zero bits in positive integer
...dapting Óscar's and Adam's solutions to process the integer in 64-bit and 32-bit chunks, respectively. Both were at least ten times slower than bin(n).count("1") (the 32-bit version took about half again as much time).
On the other hand, gmpy popcount() took about 1/20th of the time of bin(n).coun...