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Join a list of items with different types as string in Python
...s and only convert the integers to strings when you need to display them. For example, if you have a list of integers then you can convert them one by one in a for-loop and join them with ,:
print(','.join(str(x) for x in list_of_ints))
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Detect URLs in text with JavaScript
Does anyone have suggestions for detecting URLs in a set of strings?
13 Answers
13
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Java Synchronized Block for .class
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The snippet synchronized(X.class) uses the class instance as a monitor. As there is only one class instance (the object representing the class metadata at runtime) one thread can be in this block.
With synchronized(this) the block is guarded by the instance. For every instance only one thre...
Checking network connection
I want to see if I can access an online API, but for that I need to have Internet access.
21 Answers
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Is there a /dev/null on Windows?
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I think you want NUL, at least within a command prompt or batch files.
For example:
type c:\autoexec.bat > NUL
doesn't create a file.
(I believe the same is true if you try to create a file programmatically, but I haven't tried it.)
In PowerShell, you want $null:
echo 1...
How to correctly require a specific commit in Composer so that it would be available for dependent p
...ag, in both your library and your application. Something like this should work in the application composer.json:
{
"name": "bar/bar-app",
"repositories": [
{
"type": "vcs",
"url": "ssh://git.example.com/foo-lib"
}
],
"require-dev": {
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How do I get Month and Date of JavaScript in 2 digit format?
... and getDate() on date object, we will get the single digit number .
For example :
28 Answers
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How to revert a “git rm -r .”?
...mmitted changes that you care about, then
git reset --hard HEAD
should forcibly reset everything to your last commit. If you do have uncommitted changes, but the first command doesn't work, then save your uncommitted changes with git stash:
git stash
git reset --hard HEAD
git stash pop
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Scala Doubles, and Precision
Is there a function that can truncate or round a Double? At one point in my code I would like a number like: 1.23456789 to be rounded to 1.23
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Why do all browsers' user agents start with “Mozilla/”?
All popular browsers' user agent strings, even Internet Explorer's, start with Mozilla/ . Why is this the case?
6 Answers
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