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How to call a shell script from python code?
...e], stdout=temp_file)
with open("temp.txt",'r') as file:
output = file.read()
print(output)
Don't forget to take a look at the doc subprocess
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Node.js Unit Testing [closed]
...e to play around with mocha. I can seriously recommend using it. The tests read very nicely, integration with gulp is great and tests run very fast. I was able to setup automatic standalone as well as in-browser (browserify) test runs and corresponding code coverage reports in about half a day (most...
how to remove untracked files in Git?
...itrary files, that you havn't thought of at first. Please double check and read all the comments below this answer and the --help section, etc., so to know all details to fine-tune your commands and surely get the expected result.
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How to capitalize the first letter of a String in Java?
...:
public static void main(String[] args) throws IOException {
BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
// Actually use the Reader
String name = br.readLine();
// Don't mistake String object with a Character object
String s1 = name.substring(0, 1)...
What is the difference between ${var}, “$var”, and “${var}” in the Bash shell?
...ave a lot of quotes in your string these alternative forms can get hard to read (and therefore hard to maintain). This page provides a good introduction to quoting in Bash.
Arrays ($var vs. $var[@] vs. ${var[@]})
Now for your array. According to the bash manual:
Referencing an array variable w...
How to update a record using sequelize for node?
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I have not used Sequelize, but after reading its documentation, it's obvious that you are instantiating a new object, that's why Sequelize inserts a new record into the db.
First you need to search for that record, fetch it and only after that change its proper...
How do I analyze a program's core dump file with GDB when it has command-line parameters?
...tput warning: core file may not match specified executable file. Failed to read a valid object file image from memory.
– Treper
Nov 29 '11 at 5:07
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C state-machine design [closed]
...am building one small-ish state-machine at the heart of one of my worker thread.
27 Answers
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How to turn NaN from parseInt into 0 for an empty string?
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@markzzz Read question again. OP asks: "Is it possible somehow to return 0 instead of NaN". OP don't want to check, whether particular string is parsable to int. OP wants to get 0 instead of NaN. This is solved by Matt's code perfectl...
How to UPSERT (MERGE, INSERT … ON DUPLICATE UPDATE) in PostgreSQL?
...e.
If you're on 9.5 and don't need to be backward-compatible you can stop reading now.
9.4 and older:
PostgreSQL doesn't have any built-in UPSERT (or MERGE) facility, and doing it efficiently in the face of concurrent use is very difficult.
This article discusses the problem in useful detail.
In g...