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When to use window.opener / window.parent / window.top
...I've a main page which opens a child using window.open() upon page submit. Now this child window open another child window with the same window.open() closing self. Now when I submit my second child (first child is no more exists), I would like to access the page elements of my main page. Is this po...
How can I undo git reset --hard HEAD~1?
...0 deletions(-)
create mode 100644 file2
$ git reset --hard HEAD^
HEAD is now at 1a75c1d... added file1
$ cat file2
cat: file2: No such file or directory
$ git reflog
1a75c1d... HEAD@{0}: reset --hard HEAD^: updating HEAD
f6e5064... HEAD@{1}: commit: added file2
$ git reset --hard f6e5064
HEAD i...
C# 'is' operator performance
...
I'm with Ian, you probably don't want to do this.
However, just so you know, there is very little difference between the two, over 10,000,000 iterations
The enum check comes in at 700
milliseconds (approx)
The IS check comes in at 1000
milliseconds (approx)
I personally wouldn't fix this pro...
What are the new documentation commands available in Xcode 5? [closed]
...are.
- returns: The number squared.
*/
Notice how @param is now - parameter.
You can also now include bullets in your documentation:
/**
- square(5) = 25
- square(10) = 100
*/
share
...
Can't get Gulp to run: cannot find module 'gulp-util'
...
So with a 150K views on this question alone, I'd love to know what the root cause of this is... This occurs quite frequently for me and I'm guessing I'm not the only one. This adds up to a lot of wasted time!
– cloakedninjas
Jul 7 '17 at 9:41
...
Python UTC datetime object's ISO format doesn't include Z (Zulu or Zero offset)
... return timedelta(0)
Then you can manually add the time zone info to utcnow():
>>> datetime.utcnow().replace(tzinfo=simple_utc()).isoformat()
'2014-05-16T22:51:53.015001+00:00'
Note that this DOES conform to the ISO 8601 format, which allows for either Z or +00:00 as the suffix for UT...
In Bash, how can I check if a string begins with some value?
...d also have suggested the Bash-Hackers' wiki, but it's been down for a bit now).
– Charles Duffy
Oct 21 '17 at 23:19
...
Calculating moving average
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Some years later but dplyr now has a filter function, if you have this package loaded use stats::filter
– blmoore
Apr 8 '15 at 14:00
...
how can I add the aidl file to Android studio (from the in-app billing example)
...ng to the directory App_name/app/src/main/aidl/com/android/vending/billing
Now go ahead with InApp billing coding and while defining InApp related services you will get an error can not resolve symbol IInAppBillingXXXXXX
Now goto to Build from android studio menu , click on Rebuild Project. This wil...
ERROR:'keytool' is not recognized as an internal or external command, operable program or batch file
...sing the below command
set PATH=C:\Program Files\Java\jdk1.8.0_211\bin
now the path is set now you can use the keytool
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