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How to return an empty ActiveRecord relation?
...nding that I need to guarantee an empty ActiveRecord::Relation for a short time.
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Advantage of switch over if-else statement
... technology and trust me: Finding such "useless" constructs takes a lot of time. For compiler guys such an optimization does mot make sense.
– Nils Pipenbrinck
Oct 12 '08 at 20:44
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How does one change the language of the command line interface of Git?
...LL
LC_xxx, according to selected locale category: LC_CTYPE, LC_NUMERIC, LC_TIME, LC_COLLATE, LC_MONETARY, LC_MESSAGES, ...
LANG
Variables whose value is set but is empty are ignored in this lookup.
LANG is the normal environment variable for specifying a locale. As a user, you normally se...
browser sessionStorage. share between tabs?
...it.
localStorage.removeItem('sessionStorage'); // <- could do short timeout as well.
} else if (event.key == 'sessionStorage' && !sessionStorage.length) {
// another tab sent data <- get it
var data = JSON.parse(event.newValue);
for (var key in data) {
sessionSt...
Hiding the scroll bar on an HTML page
...handle all the scrolling. If you do not also set focus to an element every time you scroll for the user, then your AT user will be completely lost. Also, your user has now lost all fine-tuned control over what (s)he sees. Very poor UX to take over scrolling for your user.
– Shi...
How does Google's Page Speed lossless image compression work?
...om o2 to o7. Notice that higher optimization level means longer processing time.
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USB Debugging option greyed out
...bout Phone”
Go to “Software Information”
Tap “Build number” five times.
A pop-up will appear saying “You are now a developer”. Your’re not done yet.
Go back to your phone’s home page by pushing the home button.
Go to “Settings”.
Go to “Developer options”
Click the “USB ...
How to use sed/grep to extract text between two words?
I am trying to output a string that contains everything between two words of a string:
12 Answers
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Check if a Python list item contains a string inside another string
I have a list:
18 Answers
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Shorten string without cutting words in JavaScript
I'm not very good with string manipulation in JavaScript, and I was wondering how you would go about shortening a string without cutting any word off. I know how to use substring, but not indexOf or anything really well.
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