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Python Image Library fails with message “decoder JPEG not available” - PIL
PIL does support JPEG in my system.
15 Answers
15
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The 3 different equals
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You have = the assignment operator, == the 'equal' comparison operator and === the 'identical' comparison operator.
$a = $b Assign Sets $a to be equal to $b.
$a == $b Equal TRUE if $a is equal to $b.
$a === $b Identical TRUE if $a is ...
Is there a splice method for strings?
The Javascript splice only works with arrays. Is there similar method for strings? Or should I create my own custom function?
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Why are my basic Heroku apps taking two seconds to load?
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If your application is unused for a while it gets unloaded (from the server memory).
On the first hit it gets loaded and stays loaded until some time passes without anyone accessing it.
This is done to save server resources. If no one uses your app wh...
Creating a BLOB from a Base64 string in JavaScript
...on will decode a Base64-encoded string into a new string with a character for each byte of the binary data.
const byteCharacters = atob(b64Data);
Each character's code point (charCode) will be the value of the byte. We can create an array of byte values by applying this using the .charCodeAt meth...
Why not abstract fields?
...g a final field in your abstract class that is initialised in its constructor (untested code):
abstract class Base {
final String errMsg;
Base(String msg) {
errMsg = msg;
}
abstract String doSomething();
}
class Sub extends Base {
Sub() {
super("Sub message"...
Validate decimal numbers in JavaScript - IsNumeric()
.... +true == 1; but true shouldn't be considered as "numeric").
I think is worth sharing this set of +30 unit tests made to numerous function implementations, and also share the one that passes all my tests:
function isNumeric(n) {
return !isNaN(parseFloat(n)) && isFinite(n);
}
P.S. is...
Is memcached a dinosaur in comparison to Redis? [closed]
I have worked quite a bit with memcached the last weeks and just found out about Redis. When I read this part of their readme, I suddenly got a warm, cozy feeling in my stomach:
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扩展App Inventor：具有多点触控和手势检测功能 · App Inventor 2 中文网
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扩展App Inventor：具有多点触控和手势检测功能
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扩展App Inventor：具有多点触控和手势检测功能
Xinyue Deng (dxy0420@mit.edu)
Hal Abelson (hal@mit.edu)
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扩展App Inventor：具有多点触控和手势检测功能 · App Inventor 2 中文网
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扩展App Inventor：具有多点触控和手势检测功能
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扩展App Inventor：具有多点触控和手势检测功能
Xinyue Deng (dxy0420@mit.edu)
Hal Abelson (hal@mit.edu)
...