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Programmatically obtain the phone number of the Android phone
...on android:name="android.permission.READ_PHONE_STATE"/>
Caveats:
According to the highly upvoted comments, there are a few caveats to be aware of. This can return null or "" or even "???????", and it can return a stale phone number that is no longer valid. If you want something that uniquely ...
Python time measure function
...
First and foremost, I highly suggest using a profiler or atleast use timeit.
However if you wanted to write your own timing method strictly to learn, here is somewhere to get started using a decorator.
Python 2:
def timing(f):
def w...
Unit testing Anti-patterns catalogue
anti-pattern : there must be at least two key elements present to formally distinguish an actual anti-pattern from a simple bad habit, bad practice, or bad idea:
...
How can I change image tintColor in iOS and WatchKit
I have an UIImageView called "theImageView", with UIImage in a single color (transparent background) just like the left black heart below. How can I change the tint color of this image programmatically in iOS 7 or above, as per the tint method used in the iOS 7+ Navigation Bar icons?
...
How to add a “open git-bash here…” context menu to the windows explorer?
How to add a context (aka right click) menu to the windows explorer that, when clicked, opens the git-bash console in the current explorer folder?
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How to remove text from a string?
...".replace('data-','');
console.log(ret); //prints: 123
Docs.
For all occurrences to be discarded use:
var ret = "data-123".replace(/data-/g,'');
PS: The replace function returns a new string and leaves the original string unchanged, so use the function return value after the replace(...
How to deal with floating point number precision in JavaScript?
... If you really need your results to add up exactly, especially when you
work with money: use a special decimal
datatype.
If you just don’t want to see all those extra decimal places: simply
format your result rounded to a fixed
number of decimal places when
displaying it.
If you have...
Recommended website resolution (width and height)? [closed]
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The advice these days is:
Optimize for 1024x768. For most sites this will cover most visitors. Most logs show that 92-99% of your visits will be over 1024 wide. While 1280 is increasingly common, there are still lots at 1024 and some below that. Optimize for th...
Check if a program exists from a Makefile
... to fail early if a required executable is not in PATH rather than to run for a possibly long time before failing.
The excellent solution provided by engineerchuan requires making a target. However, if you have many executables to test and your Makefile has many independent targets, each of which r...
Is there a bash command which counts files?
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This simple one-liner should work in any shell, not just bash:
ls -1q log* | wc -l
ls -1q will give you one line per file, even if they contain whitespace or special characters such as newlines.
The output is piped to wc -l, which counts the number of...