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How to output numbers with leading zeros in JavaScript [duplicate]
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NOTE: Potentially outdated. ECMAScript 2017 includes String.prototype.padStart
You're asking for zero padding? Not really rounding. You'll have to convert it to a string since numbers don't make sense with leading zeros. Something like ...
form with no action and where enter does not reload page
...t an action attribute is not a form, according to standards - and will actually cause a page reload in some browsers.. I've found that action="javascript:void(0);" works well.
– Dutchie432
Oct 17 '11 at 20:14
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Remove a file from a Git repository without deleting it from the local filesystem
...ged content has to match either the tip of the branch or the file on disk, allowing the file to be removed from just the index.
So, for a single file:
git rm --cached mylogfile.log
and for a single directory:
git rm --cached -r mydirectory
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how to use adb command to push a file on device without sd card
...droid/sdk/platform-tools)
To check the SDCards(External and Internal) installed on your device fire these commands :
1) ./adb shell (hit return/enter)
2) cd -(hit return/enter)
now you will see the list of Directories and files from your android device
there you may find /sdcard as well as /sto...
How to convert a char array back to a string?
...ver, that this is a very unusual situation: Because String is handled specially in Java, even "foo" is actually a String. So the need for splitting a String into individual chars and join them back is not required in normal code.
Compare this to C/C++ where "foo" you have a bundle of chars terminat...
Read values into a shell variable from a pipe
...e, what worked for me was (a different example but similar usage): pip install -U echo $(ls -t *.py | head -1). In case, someone ever has a similar problem and stumbles upon this answer like me.
– ivan_bilan
Mar 14 '19 at 15:25
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Checking if an Android application is running in the background
...Pause();
MyApplication.activityPaused();
}
Update
ActivityLifecycleCallbacks were added in API level 14 (Android 4.0). You can use them to track whether an activity of your application is currently visible to the user. Check Cornstalks' answer below for the details.
The wrong one
I used to s...
iPhone Simulator location
Where on my machine is the iPhone simulator installed?
17 Answers
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Converting stream of int's to char's in java
...he right way to go (after checking whether it's -1 or not)... but it's normally more efficient and convenient to call read(char[], int, int) to read a whole block of text at a time. Don't forget to check the return value though, to see how many characters have been read.
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keytool error Keystore was tampered with, or password was incorrect
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Note: -genkey is old now rather use -genkeypair althought both works equally.
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