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What's a quick way to test to see a file exists?
...he directory's files, or I can try to open a specific file. What's the fastest way? I just need to know if the file is there or if it does not exist.
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How do I run a Python script from C#?
...g if i pass c:\python26\python.exe as cmd and then c:\temp\code.py c:\temp\testfile.txt as args it should work?
– Inbar Rose
Aug 2 '12 at 14:12
...
How to process SIGTERM signal gracefully?
...n, similar to if you were to Ctrl+C your program.
Example program signals-test.py:
#!/usr/bin/python
from time import sleep
import signal
import sys
def sigterm_handler(_signo, _stack_frame):
# Raises SystemExit(0):
sys.exit(0)
if sys.argv[1] == "handle_signal":
signal.signal(signa...
Why do std::shared_ptr work
...t will be used to destroy it.
The deleter function of your shared_ptr<Test>, given the way you constructed it, is the normal one for Test, which converts the pointer to Test* and deletes it.
When you push your shared_ptr<Test> into the vector of shared_ptr<void>, both of those a...
Reference requirements.txt for the install_requires kwarg in setuptools setup.py file
...t doesn't refer any external requirements by URL) with the following hack (tested with pip 9.0.1):
install_reqs = parse_requirements('requirements.txt', session='hack')
This doesn't filter environment markers though.
In old versions of pip, more specifically older than 6.0, there is a public A...
How do you use script variables in psql?
...ontrary to Bryce's report, it seems to work fine for me. CREATE TABLE test (name VARCHAR, age INT); INSERT INTO test (name, age) VALUES ('Jack', 21), ('Jill', 20); WITH vars AS (SELECT N'Jack' AS name, 21 AS age) SELECT test.* FROM test, vars WHERE test.name = vars.name and te...
How to explain dependency injection to a 5-year-old? [closed]
...ing this way becomes problematic especially when you want to perform unit testing.
The main problem comes when you need to test one particular object, you need to create an instance of other object, and most likely you need to create an instance of yet other object to do that. The chain may become...
Difference between MEAN.js and MEAN.io
...me... They both use swig for templating, they both use karma and mocha for tests, passport integration, nodemon, etc.
Why so similar? Mean.js is a fork of Mean.io and both initiatives were started by the same guy... Mean.io is now under the umbrella of the company Linnovate and looks like the guy ...
When is it acceptable to call GC.Collect?
...
I use GC.Collect only when writing crude performance/profiler test rigs; i.e. I have two (or more) blocks of code to test - something like:
GC.Collect(GC.MaxGeneration, GCCollectionMode.Forced);
TestA(); // may allocate lots of transient objects
GC.Collect(GC.MaxGeneration, GCCollectio...
What's the best way to convert a number to a string in JavaScript? [closed]
...pears for raw speed there is an advantage for .toString()
See Performance tests here (not by me, but found when I went to write my own):
http://jsben.ch/#/ghQYR
Fastest based on the JSPerf test above: str = num.toString();
It should be noted that the difference in speed is not overly significant ...