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Technically, why are processes in Erlang more efficient than OS threads?
...er to switch context, because they only switch at known, controlled points and therefore don't have to save the entire CPU state (normal, SSE and FPU registers, address space mapping, etc.).
Erlang processes use dynamically allocated stacks, which start very small and grow as necessary. This permits...
How to read/write from/to file using Go?
...en trying to learn Go on my own, but I've been stumped on trying read from and write to ordinary files.
8 Answers
...
How to get an absolute file path in Python
...resumed), there is no linkage between the argument to the abspath function and a real file. You could give any pathname- non-existent files and directory heirarchies are fine- and abspath will simply resolve the bits of the path (including the parent directory ".." element) and return a string. This...
How to create new folder? [duplicate]
...
You can create a folder with os.makedirs()
and use os.path.exists() to see if it already exists:
newpath = r'C:\Program Files\arbitrary'
if not os.path.exists(newpath):
os.makedirs(newpath)
If you're trying to make an installer: Windows Installer does a lot of...
Android add placeholder text to EditText
...er the field is selected (unlike how hint behaves), do this:
In Java:
// Cast Your EditText as a TextView
((TextView) findViewById(R.id.email)).setText("your Text")
In Kotlin:
// Cast your EditText into a TextView
// Like this
(findViewById(R.id.email) as TextView).text = "Your Text"
// Or si...
How can I use Python to get the system hostname?
...at program for a local network. I would like be able to identify computers and get the user-set computer name with Python.
...
How to join components of a path when you are constructing a URL in Python
... doing anything for me. I would like at least join("/media", "js/foo.js") and join("/media/", "js/foo.js") to work. Thanks for what appears to be the right answer: roll your own.
– amjoconn
Nov 25 '09 at 14:42
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Non-alphanumeric list order from os.listdir()
...y containing the following subdirectories: run01, run02, ... run19, run20, and then I generate a list from the following command:
...
Simplest way to do a recursive self-join?
...can preserve the tree order:
WITH q AS
(
SELECT m.*, CAST(ROW_NUMBER() OVER (ORDER BY m.PersonId) AS VARCHAR(MAX)) COLLATE Latin1_General_BIN AS bc
FROM mytable m
WHERE ParentID IS NULL
UNION ALL
SELECT m.*, q.bc + '.' + CAST(ROW_NUMBER() ...
How to get the PATH environment-variable separator in Python?
...
If, like me, you didn't read the body of this question and just went by the title, you'll think this is the character that separates elements of a filesystem path (forward slash on Linux and MacOSX, backslash on Windows). It's not, it the character that separates elements of a s...