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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....
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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How to create full compressed tar file using Python?
...zipped tar archive containing a single top-level folder with the same name and contents as source_dir.
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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 to set JAVA_HOME environment variable on Mac OS X 10.9?
... .bash_profile
export JAVA_HOME=$(/usr/libexec/java_home)
save and exit from vim editor, then run the source command on .bash_profile
$ source .bash_profile
$ echo $JAVA_HOME
/Library/Java/JavaVirtualMachines/1.7.0.jdk/Contents/Home
...
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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Set up adb on Mac OS X
...ion (optional)
rm -rf ~/.android-sdk-macosx/
Download the Mac SDK Tools from the Android developer site under "Get just the command line tools". Make sure you save them to your Downloads folder.
Go to your Downloads folder
cd ~/Downloads/
Unzip the tools you downloaded
unzip tools_r*-macosx....
mmap() vs. reading blocks
...d I came across a nice post (link) on the Linux kernel mailing list. It's from 2000, so there have been many improvements to IO and virtual memory in the kernel since then, but it nicely explains the reason why mmap or read might be faster or slower.
A call to mmap has more overhead than read (ju...
How to fix java.net.SocketException: Broken pipe?
...nt or the server) closing the connection while your code is either reading from or writing to the connection.
This is a very common exception in client/server applications that receive traffic from clients or servers outside of the application control. For example, the client is a browser. If the b...