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How to leave/exit/deactivate a Python virtualenv
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This doesn't deserve the downvotes. See edit of selected response: source deactivate is for the anaconda environment.
– Doug Bradshaw
Nov 13 '15 at 19:52
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Detect if device is iOS
... version
The most common way of detecting the iOS version is by parsing it from the User Agent string. But there is also feature detection inference*;
We know for a fact that history API was introduced in iOS4 - matchMedia API in iOS5 - webAudio API in iOS6 - WebSpeech API in iOS7 and so on.
Note: T...
How to set NODE_ENV to production/development in OS X
...a config.json file in your directory and everytime your app runs, it reads from it and sets the configuration.
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sed command with -i option failing on Mac, but works on Linux
...n of which implementation of sed you are dealing with. On a Mac sed comes from BSD and is subtly different from the sed you might find on a typical Linux box. I suggest you man sed.
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What is the difference between the operating system and the kernel? [closed]
I do not understand the difference between operating system and kernel. Can someone please explain it?
3 Answers
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How do I manually create a file with a . (dot) prefix in Windows? For example, .htaccess
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Within Notepad select File > Save As...
File name: ".whatever you want" (with the leading dot)
You can do it in Explorer (in Windows 7) by adding a period at the end of the filename:
.whatever you want.
Windows will automatically re...
XMLHttpRequest Origin null is not allowed Access-Control-Allow-Origin for file:/// to file:/// (Serv
... // Database test code from the sql.js project
var test = sqldb.exec("SELECT * FROM Genre");
document.getElementById("test").textContent = JSON.stringify(test);
</script>
I imagine it would be trivial to modify this to read JSON, maybe even XML; I'll leave that as an exercise for th...
How the single threaded non blocking IO model works in Node.js
...t/context the notified event belongs to and proceed processing the request from there. Note that this will necessarily mean you'll be on a different stack frame from the one that originated the request to the OS as the latter had to yield to a process' dispatcher in order for a single threaded proce...
psql: could not connect to server: No such file or directory (Mac OS X)
...brew info postgresql found out this that helped:
To migrate existing data from a previous major version of PostgreSQL run:
brew postgresql-upgrade-database
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Calling startActivity() from outside of an Activity?
...uirement is now enforced
With Android 9, you cannot start an activity from a non-activity
context unless you pass the intent flag FLAG_ACTIVITY_NEW_TASK. If you
attempt to start an activity without passing this flag, the activity
does not start, and the system prints a message to the log....