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Simple logical operators in Bash
...ssions with more quirks (but older and more portable). Don't write any for now; start worrying about them when you find scripts that contain them.
This is the idiomatic way to write your test in bash:
if [[ $varA == 1 && ($varB == "t1" || $varC == "t2") ]]; then
If you need portability ...
How to prevent multiple instances of an Activity when it is launched with different Intents
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Does anyone know if this code will ensure that the existing instance of the app will be brought to the foreground? Or does it just call finish(); and leave the user with no visual indication that anything has happened?
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Plot correlation matrix into a graph
I have a matrix with some correlation values. Now I want to plot that in a graph that looks more or less like that:
11 Answ...
How to view or edit localStorage
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Simone, i know how to set and read localStorage with JS, but I need to manually edit/delete it
– Joe Doe
Feb 22 '12 at 23:44
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Why does Math.round(0.49999999999999994) return 1?
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@ Oli: Oh now that's interesting, they took that bit out for Java 7 (the docs I linked to) -- maybe in order to avoid causing this sort of odd behavior by triggering a (further) loss of precision.
– T.J. Crowder
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How do you attach a new pull request to an existing issue on github?
...s:synchrony", "base": "master"}' \
https://api.github.com/repos/technoweenie/faraday/pulls
This creates a pull request:
ask technoweenie at project faraday (https://api.github.com/repos/technoweenie/faraday/pulls)
to pull from the synchrony branch in smparkes' fork ("head": "smparkes:sync...
Closing multiple issues in Github with a commit message
I know you can close issues by putting closes #1 or fixes #1 in the commit message. What is the best way to close multiple issues in the same commit message?
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How to validate an email address in JavaScript
... here you have another RFC 2822 compliant regex
The official standard is known as RFC 2822. It describes the syntax that valid email addresses must adhere to. You can (but you shouldn't — read on) implement it with this regular expression:
(?:[a-z0-9!#$%&'*+/=?^_`{|}~-]+(?:\.[a-z0-9!#$%&'...
How to make Java honor the DNS Caching Timeout?
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I don't know that "broken" is valid. Java (for security reasons) caches DNS entries forever, or until the JVM is restarted, whichever comes first. This (from what I can tell) was by design. The settings can be made in the java.secu...
Django Rest Framework - Could not resolve URL for hyperlinked relationship using view name “user-det
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@GrijeshChauhan— Thanks! Now fixed.
– Carlton Gibson
Apr 16 '15 at 11:45
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