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What does the “at” (@) symbol do in Python?
... as well: stackoverflow.com/a/21563036/5049813
– Pro Q
Apr 25 '18 at 22:47
@decorators also can be added
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What's the right OAuth 2.0 flow for a mobile app
...nt authorization flow (defined in Section 4.2 of OAuth 2.0 [RFC6749]) generally works with the practice of performing the authorization request in the browser and receiving the authorization response via URI-based inter-app communication.
However, as the implicit flow cannot be protected by PKCE [RF...
Adding iOS UITableView HeaderView (not section header)
... Worth to mention how it works in StoryBoard editor now: stackoverflow.com/q/7841167/926907
– Dmitry Zaytsev
May 29 '13 at 16:57
...
_=> what does this underscore mean in Lambda expressions?
...in May 2010, but not as of June 2010. Awesome timing! :) stackoverflow.com/q/6397078/38765
– Andrew Grimm
May 7 '12 at 7:22
add a comment
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Should I use Vagrant or Docker for creating an isolated environment? [closed]
...I think Docker is what you want.
Vagrant is a virtual machine manager. It allows you to script the virtual machine configuration as well as the provisioning. However, it is still a virtual machine depending on VirtualBox (or others) with a huge overhead. It requires you to have a hard drive file th...
How to see if an NSString starts with a certain other string?
...
I like to use this method:
if ([[temp substringToIndex:4] isEqualToString:@"http"]) {
//starts with http
}
or even easier:
if ([temp hasPrefix:@"http"]) {
//do your stuff
}
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Any equivalent to .= for adding to beginning of string in PHP?
...ays isset, no need for this double check. Furthermore, since $chunk is a required parameter of the function, it needs to be passed to the function or PHP will complain. This means this check can be abbreviated to if ($chunk) (to see if it's falsy a.k.a. "empty"). But, if $chunk doesn't contain anyth...
A complete solution to LOCALLY validate an in-app receipts and bundle receipts on iOS 7
...receipt success:successBlock failure:nil]; // failureBlock is nil intentionally. See below.
if (verified) return;
// Apple recommends to refresh the receipt if validation fails on iOS
[[RMStore defaultStore] refreshReceiptOnSuccess:^{
RMAppReceipt *receipt = [RMAppReceipt bundleReceipt];
[s...
Is calculating an MD5 hash less CPU intensive than SHA family functions?
...s with sphlib, a library of hash function implementations in C (and Java). All implementations are from the same author (me) and were made with comparable efforts at optimizations; thus the speed differences can be considered as really intrinsic to the functions.
As a point of comparison, consider ...
Adding a regression line on a ggplot
... answered Oct 12 '18 at 5:12
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