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How to update Python?
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UPDATE: 2018-07-06
This post is now nearly 5 years old! Python-2.7 will stop receiving official updates from python.org in 2020. Also, Python-3.7 has been released. Check out Python-Future on how to make your Python-2 code compatible with Python-3. For upda...
What is the difference between a var and val definition in Scala?
...ge the state of that object. At the root of it, however, there was a var.
Now, immutability is a good thing for many reasons. First, if an object doesn't change internal state, you don't have to worry if some other part of your code is changing it. For example:
x = new B(0)
f(x)
if (x.value.value ...
Lock-free multi-threading is for real threading experts
...accesses, to hide main memory latency and make better use of their cache.
Now, it is sure against intuition that a sequence of code does not flow "top-down", instead it runs as if there was no sequence at all - and may be called "devil's playground". I believe it is infeasible to give an exact answ...
What is your preferred php deployment strategy? [closed]
...se branches for nearly every change I'm working on (I've got about 5 right now), and tend to flip back and forth between them. The master branch doesn't get changed directly except for merging other branches.
I run the live server direct from the master branch, and when I'm finished with another br...
Using the RUN instruction in a Dockerfile with 'source' does not work
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And now how do I downvote the original answer and upvote the edit by 'a concerned'?
– Slava
Apr 24 '19 at 10:12
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Select which href ends with some string
... something changed recently. $('[href$=-abc]') used to work. Now it requires quotes $('[href$="-abc"]') I don't know when it changed. Maybe it was always supposed to require quotes and just happened to work before.
– gman
Jul 25 '11 at 7:34
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ruby operator “=~” [duplicate]
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This operator matches strings against regular expressions.
s = 'how now brown cow'
s =~ /cow/ # => 14
s =~ /now/ # => 4
s =~ /cat/ # => nil
If the String matches the expression, the operator returns the offset, and if it doesn't, it returns nil. It's slightly more complicated than...
argparse: identify which subparser was used [duplicate]
...re', help='name of app to process')
app_parser.set_defaults(which='app')
Now if you run
print parser.parse_args(["all"])
The result is
Namespace(which='all')
Check out the add_subparsers() documentation for more information and another example.
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CSS values using HTML5 data attribute [duplicate]
I want to know if there's any way it's possible to set a css value using HTML5's data- attribute the same way that you can set css content . Currently it doesn't work.
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async at console app in C#? [duplicate]
... Console.WriteLine("Core NLPS Server: Started on port 8080. " + DateTime.Now);
while(line != "quit")
{
Console.Write(": ");
line = Console.ReadLine().ToLower();
Console.WriteLine(line);
if(line == "?" || line == "help")
...