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How to optimize for-comprehensions and loops in Scala?
...g run-time compilation of "virtual" Scala for very high performance. For example, multiple idiomatic functional loops can be fused at run-time into optimal JVM bytecode, or to another target such as a GPU. The system is extensible, allowing user defined DSLs and transformations. Check out the public...
What does @@variable mean in Ruby?
... preceded with an at sign is that it is an instance variable, like this in PHP:
5 Answers
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Is git's semi-secret empty tree object reliable, and why is there not a symbolic name for it?
...0 +0000" GIT_COMMITTER_DATE="Thu, 01 Jan 1970 00:00:00 +0000" git commit --allow-empty -m 'Initial commit'
Will give you:
(See the tree SHA1?)
You can even rebase your existing history on top of that empty commit (see "git: how to insert a commit as the first, shifting all the others?")
In bo...
Does MySQL foreign_key_checks affect the entire database?
...w, I imported the database without errors. Hope this could help:
Changing php.ini at C:\xampp\php\php.ini
max_execution_time = 600
max_input_time = 600
memory_limit = 1024M
post_max_size = 1024M
Changing my.ini at C:\xampp\mysql\bin\my.ini
max_allowed_packet = 1024M
...
Is there any pythonic way to combine two dicts (adding values for keys that appear in both)?
For example I have two dicts:
17 Answers
17
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Check image width and height before upload with Javascript
...dth + " " + img.height);
}
Check for specific size. Using 100 x 100 as example
let img = new Image()
img.src = window.URL.createObjectURL(event.target.files[0])
img.onload = () => {
if(img.width === 100 && img.height === 100){
alert(`Nice, image is the right size. It can be ...
How do you get the logical xor of two variables in Python?
...e not comparing apples to oranges, is "if xor( isApple(x), isApple(y) )" really clearer than "if isApple(x) != isApple(y)" ? Not to me!
– AmigoNico
May 21 '12 at 18:27
109
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Using jQuery to compare two arrays of Javascript objects
...
There is an easy way...
$(arr1).not(arr2).length === 0 && $(arr2).not(arr1).length === 0
If the above returns true, both the arrays are same even if the elements are in different order.
NOTE: This works only for jquery versions < 3.0.0 when using JSON objects
...
Cocoa Core Data efficient way to count entities
...
NSError *err;
NSUInteger count = [moc countForFetchRequest:request error:&err];
if(count == NSNotFound) {
//Handle error
}
[request release];
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ERROR 1045 (28000): Access denied for user 'root'@'localhost' (using password: YES)
...authentication_string" Here you can read more about it: bugs.mysql.com/bug.php?id=76655
– IberoMedia
Feb 4 '18 at 17:05
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