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What are some compelling use cases for dependent method types?
...type Edge
def end1(e: Edge): Node
def end2(e: Edge): Node
def nodes: Set[Node]
def edges: Set[Edge]
}
Somewhere else we can statically guarantee that we aren't mixing up nodes from two different graphs, e.g.:
def shortestPath(g: Graph)(n1: g.Node, n2: g.Node) = ...
Of course, this alr...
Test if lists share any items in python
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Short answer: use not set(a).isdisjoint(b), it's generally the fastest.
There are four common ways to test if two lists a and b share any items. The first option is to convert both to sets and check their intersection, as such:
bool(set(a) &...
Suppress command line output
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Using a bitmask in C#
... illustration.)
public static class FlagsHelper
{
public static bool IsSet<T>(T flags, T flag) where T : struct
{
int flagsValue = (int)(object)flags;
int flagValue = (int)(object)flag;
return (flagsValue & flagValue) != 0;
}
public static void Set...
Find all files in a directory with extension .txt in Python
How can I find all the files in a directory having the extension .txt in python?
26 Answers
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Non-type template parameters
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Bash script absolute path with OS X
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There's a realpath() C function that'll do the job, but I'm not seeing anything available on the command-line. Here's a quick and dirty replacement:
#!/bin/bash
realpath() {
[[ $1 = /* ]] && echo "$1" || echo "$PWD/${1#./}"
}
realpat...
Check if application is on its first run [duplicate]
I am new to android development and and I want to setup some of application's attributes based on Application first run after installation. Is there any way to find that the application is running for the first time and then to setup its first run attributes?
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How I can I lazily read multiple JSON values from a file/stream in Python?
I'd like to read multiple JSON objects from a file/stream in Python, one at a time. Unfortunately json.load() just .read() s until end-of-file; there doesn't seem to be any way to use it to read a single object or to lazily iterate over the objects.
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How to generate a range of numbers between two numbers?
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There's a maximum maxrecursion set to 32767 (in SQL Server 2012).
– BProv
Dec 2 '16 at 16:25
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