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How to customize the back button on ActionBar
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So you can change it programmatically easily by using homeAsUpIndicator() function that added in android API level 18 and upper.
ActionBar().setHomeAsUpIndicator(R.drawable.ic_yourindicator);
If you use support library
getSupportActionBar().setHomeAsUpI...
Are list-comprehensions and functional functions faster than “for loops”?
...like map() , filter() and reduce() faster than a for loop? Why, technically, they run in a C speed , while the for loop runs in the python virtual machine speed ?.
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getting the X/Y coordinates of a mouse click on an image with jQuery [duplicate]
...alculate how far from the bottom or right, you would have to use jQuery's width and height methods.
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What's the difference between a file descriptor and file pointer?
...other Unix-like systems.
You pass "naked" file descriptors to actual Unix calls, such as read(), write() and so on.
A FILE pointer is a C standard library-level construct, used to represent a file. The FILE wraps the file descriptor, and adds buffering and other features to make I/O easier.
You p...
Get name of property as a string
... This is badass and very useful for ModelState.AddModelError calls.
– Michael Silver
Dec 12 '15 at 19:09
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Should I use Java's String.format() if performance is important?
...tely for each approach, the '+' operator, String.format and StringBuilder (calling toString()), so the memory used will not be affected by other approaches.
I added more concatenations, making the string as "Blah" + i + "Blah"+ i +"Blah" + i + "Blah".
The result are as follow (average of 5 runs eac...
Pass Method as Parameter using C#
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How would the Func call change if the Method has as signature of returning void and no parameters? I can't seem to get the syntax to work.
– user31673
Jan 17 '10 at 21:38
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How to run a program without an operating system?
...or, and then install it to a disk.
Here we create one with a single printf call:
printf '\364%509s\125\252' > main.img
sudo apt-get install qemu-system-x86
qemu-system-x86_64 -hda main.img
Outcome:
Note that even without doing anything, a few characters are already printed on the screen. Those ...
Dynamically update values of a chartjs chart
... .update(config)
Triggers an update of the chart. This can be safely called after updating the data object. This will update all scales, legends, and then re-render the chart. A config object can be provided with additional configuration for the update process.
update() can be safely called...
How do I programmatically change file permissions?
In Java, I'm dynamically creating a set of files and I'd like to change the file permissions on these files on a linux/unix file system. I'd like to be able to execute the Java equivalent of chmod . Is that possible Java 5? If so, how?
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