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How to get the PATH environment-variable separator in Python?
...ries need to be concatenated, as in an executable search path, there is an os-dependent separator character. For Windows it's ';' , for Linux it's ':' . Is there a way in Python to get which character to split on?
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How to read/write from/to file using Go?
...to read and write files in Go.
Because file API has changed recently and most other answers don't work with Go 1. They also miss bufio which is important IMHO.
In the following examples I copy a file by reading from it and writing to the destination file.
Start with the basics
package main
impo...
How to use the C socket API in C++ on z/OS
...'m having issues getting the C sockets API to work properly in C++ on z/OS .
9 Answers
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Technically, why are processes in Erlang more efficient than OS threads?
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There are several contributing factors:
Erlang processes are not OS processes. They are implemented by the Erlang VM using a lightweight cooperative threading model (preemptive at the Erlang level, but under the control of a cooperatively scheduled runtime). This means that it is much chea...
How do I repeat an edit on multiple lines in Vim?
... to insert something on multiple lines, use Shift-i.
So for the text:
abc123abc
def456def
ghi789ghi
if you hit Ctrl-v with your cursor over the 1, hit j twice to go down two columns, then Shift-i,ESC , your text would look like this:
abc,123abc
def,456def
ghi,789ghi
(the multi-line insert has...
Python, add trailing slash to directory string, os independently
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os.path.join(path, '') will add the trailing slash if it's not already there.
You can do os.path.join(path, '', '') or os.path.join(path_with_a_trailing_slash, '') and you will still only get one trailing slash.
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How to parse a string to an int in C++?
... problem: what if the caller needs to distinguish between bad input (e.g. "123foo") and a number that is out of the range of int (e.g. "4000000000" for 32-bit int)? With stringstream, there is no way to make this distinction. We only know whether the conversion succeeded or failed. If it fails, we h...
How to determine whether an object has a given property in JavaScript
...throw new Error("IllegalArgumentException");
}
alert("ok");
}
f({req1: 123}); // error
f({req1: 123, req2: 456}); // ok
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How to clear the interpreter console?
Like most Python developers, I typically keep a console window open with the Python interpreter running to test commands, dir() stuff, help() stuff , etc.
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How to create a new database using SQLAlchemy?
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SQLAlchemy-Utils provides custom data types and various utility functions for SQLAlchemy. You ...