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How to free memory in Java?
... @Pablo Santa Cruz What do you mean it does not free memory? I just tested it out on my program that seemed to have a leak and the ram usage seemed to stabilize? And Daniel just said it only suggests it then how come the percentage of ram used always stabilized each time I called the method. ...
Singletons vs. Application Context in Android?
...be re-created when you actually need them.
Singletons are a nightmare for testing and, if lazily initialized, will introduce "state indeterminism" with subtle side effects (which may suddenly surface when moving calls to getInstance() from one scope to another). Visibility has been mentioned as ano...
Detect URLs in text with JavaScript
...that really works in most obvious case! This one deserves a bookmarking. I tested thousands examples from googles search until i find this.
– Ismael
Jan 16 '15 at 15:11
6
...
Are there any SHA-256 javascript implementations that are generally considered trustworthy?
... The builtin 'crypto' library should do just fine: nodejs.org/dist/latest-v11.x/docs/api/crypto.html
– tytho
Jan 6 '19 at 19:42
...
How to write Unicode characters to the console?
...8;
(MSDN link to supporting documentation.)
And here's a little console test app you may find handy:
C#
using System;
using System.Text;
public static class ConsoleOutputTest {
public static void Main() {
Console.OutputEncoding = System.Text.Encoding.UTF8;
for (var i = 0; i...
How to create a new (and empty!) “root” branch?
...ID in this case, since we just need some value which is a valid pointer.
Test:
git switch master
echo foo >foo.txt
git switch --discard-changes --orphan new-orphan2
git ls-files >tracked-files
# test_must_be_empty tracked-files
...
PostgreSQL Crosstab Query
... EXTENSION for that:
CREATE EXTENSION IF NOT EXISTS tablefunc;
Improved test case
CREATE TABLE tbl (
section text
, status text
, ct integer -- "count" is a reserved word in standard SQL
);
INSERT INTO tbl VALUES
('A', 'Active', 1), ('A', 'Inactive', 2)
, ('B', 'Active', 4)...
Python Requests and persistent sessions
... supports proxy settings over subsequent calls to 'get' or 'post'.
It is tested with Python3.
Use it as a basis for your own code. The following snippets are release with GPL v3
import pickle
import datetime
import os
from urllib.parse import urlparse
import requests
class MyLoginSession:
...
Bower and devDependencies vs dependencies
...
devDependencies are for the development-related scripts, e.g. unit testing, packaging scripts, documentation generation, etc.
dependencies are required for production use, and assumed required for dev as well.
Including devDependencies within dependencies, as you have it, won't be harmful;...
Find nearest value in numpy array
... why it is so slow anyways. Plain np.searchsorted takes about 2 µs for my test set, the whole function about 10 µs. Using np.abs it's getting even worse. No clue what python is doing there.
– Michael
Feb 17 '15 at 18:07
...