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Use-case of `oneway void` in Objective-C?
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and I thought the only way to fire network tasks is to sub-thread them...using gcd_async and its friends..
– Nirav Bhatt
May 17 '16 at 13:34
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How to exclude certain messages by TAG name using Android adb logcat?
Logcat allows filtering logs but it works like that: You define filters and logcat only displays messages which matches filters. But is there a way to display all logs EXCEPT some TAGs defined by filters?
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Safely limiting Ansible playbooks to a single machine?
...all group of computers. Currently, I have my playbooks set to hosts: all and my hosts file is just a single group with all machines listed:
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How do I get the different parts of a Flask request's url?
... if the request came from the localhost:5000 or foo.herokuapp.com host and what path was requested. How do I get this information about a Flask request?
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Operation on every pair of element in a list
...x, y)
Edit: There are two very similar functions as well, permutations() and combinations(). To illustrate how they differ:
product() generates every possible pairing of elements, including all duplicates:
1,1 1,2 1,3 1,4
2,1 2,2 2,3 2,4
3,1 3,2 3,3 3,4
4,1 4,2 4,3 4,4
permutation...
Extract part of a regex match
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Use ( ) in regexp and group(1) in python to retrieve the captured string (re.search will return None if it doesn't find the result, so don't use group() directly):
title_search = re.search('<title>(.*)</title>', html, re.IGNORECAS...
Using comma as list separator with AngularJS
... answered Jul 18 '12 at 12:16
Andrew JoslinAndrew Joslin
42.7k2020 gold badges9696 silver badges7575 bronze badges
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isset() and empty() - what to use
...er something is set or not use isset.
Empty checks if the variable is set and if it is it checks it for null, "", 0, etc
Isset just checks if is it set, it could be anything not null
With empty, the following things are considered empty:
"" (an empty string)
0 (0 as an integer)
0.0 (0 as a floa...
Regular expression for a hexadecimal number?
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@NiklasB. Your shorthand is only valid if using perl regex, if using POSIX regex, then Steven's solution is the shortest. Either way, Steven's solution works for both perl and POSIX regex.
– David M. Syzdek
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GetHashCode Guidelines in C#
I read in the Essential C# 3.0 and .NET 3.5 book that:
9 Answers
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