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What Automatic Resource Management alternatives exist for Scala?
...eader.readLine()).map(_ -> ())).toList
}
You can find more examples from Using doc.
A utility for performing automatic resource management. It can be used to perform an operation using resources, after which it releases the resources in reverse order of their creation.
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Pandas: Looking up the list of sheets in an excel file
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@NicholasLu the downvote was unnecessary, this answer is from 2013! That said, whilst ExcelFile is the original way to parse excel files it is not deprecated and remains a perfectly valid way to do this.
– Andy Hayden
Aug 10 '17 at 3:38
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Pythonic way to check if a list is sorted or not
...% faster than using integer indexing:
# python2 only
if str is bytes:
from itertools import izip as zip
def is_sorted(l):
return all(a <= b for a, b in zip(l, l[1:]))
share
|
improve t...
AngularJS - Access to child scope
...in a child scope the interpreter will look up the prototype chain starting from the child and continue to the parents until it finds the property, not the other way around.
Check Vojta's comments on the issue https://groups.google.com/d/msg/angular/LDNz_TQQiNE/ygYrSvdI0A0J
In a nutshell: You cann...
how to delete all cookies of my website in php
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PHP setcookie()
Taken from that page, this will unset all of the cookies for your domain:
// unset cookies
if (isset($_SERVER['HTTP_COOKIE'])) {
$cookies = explode(';', $_SERVER['HTTP_COOKIE']);
foreach($cookies as $cookie) {
$par...
Detect permission of camera in iOS
... if you are testing code that uses this, you can't merely delete your App from the testing device and then re-instal. Doing this will not cause iOS to reissue the request to the user! What's worked for me though is to change the Bundle ID of the app each time I want to test this. A pain in the bum, ...
How to make the tab character 4 spaces instead of 8 spaces in nano?
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I'm using mint and when I set tabsize from 8 to 4 in /etc/nanorc and go back to the file, I'm still getting 8 spaces in the tab, I even tried to copy that nanorc file to ~/. but that doesn't work, closed and reopened terminal, but still I can't get 4 spaces on th...
Test if a string contains any of the strings from an array
How do I test a string to see if it contains any of the strings from an array?
14 Answers
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Why aren't variable-length arrays part of the C++ standard?
...at you should never use recursion and that you should allocate all objects from the heap.
– Andreas Brinck
Dec 11 '09 at 10:46
17
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How do I avoid capturing self in blocks when implementing an API?
...swer
Instead of accessing self directly, you should access it indirectly, from a reference that will not be retained. If you're not using Automatic Reference Counting (ARC), you can do this:
__block MyDataProcessor *dp = self;
self.progressBlock = ^(CGFloat percentComplete) {
[dp.delegate myAP...