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How to discard all changes made to a branch?
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In the source root:
git reset ./ HEAD <--un-stage any staged changes
git checkout ./ <--discard any unstaged changes
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Android emulator and virtualbox cannot run at same time
...droid SDK location displayed in the preferences. Something like:
C:\Users\<username>\AppData\Local\Android\sdk\extras
In that directory is some kind of file like intelhaxm-android.exe. Run it.
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Is there a performance difference between i++ and ++i in C?
Is there a performance difference between i++ and ++i if the resulting value is not used?
14 Answers
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Best way to find the intersection of multiple sets?
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From Python version 2.6 on you can use multiple arguments to set.intersection(), like
u = set.intersection(s1, s2, s3)
If the sets are in a list, this translates to:
u = set.intersection(*setlist)
where *a_list is list expansion
Note that set.intersection is ...
An App ID with Identifier '' is not available. Please enter a different string
...files managed by Xcode valid), given the error An App ID with Identifier '<app id>' is not available.
Solution:
I have:
manually removed INVALID iOS Team Provision Profile Managed by Xcode from Developer Portal
manually created iOS Developer Provision profile
Downloaded it via Xcode
Now...
Is there a zip-like function that pads to longest length in Python?
Is there a built-in function that works like zip() but that will pad the results so that the length of the resultant list is the length of the longest input rather than the shortest input?
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Modify/view static variables while debugging in Eclipse
...ug Variables view their is a arrow button in the right of the view. the tooltip of this button is Menu.
When you click this button a drop down menu is shown where you can select
Java -> Show static variables
Note: You do not have to restart Eclipse.
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How to use a custom comparison function in Python 3?
...am going to lose some performance by passing all the comparison operators < > = to middle man, since my original custom sort is written in C , it had around 1/2x speed of default sort.
– YOU
Mar 28 '10 at 5:26
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How do I clear stuck/stale Resque workers?
... current workers
Resque.workers
It returns a list of workers
#=> [#<Worker infusion.local:40194-0:JAVA_DYNAMIC_QUEUES,index_migrator,converter,extractor>]
pick the worker and prune_dead_workers, for example the first one
Resque.workers.first.prune_dead_workers
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Reading in a JSON File Using Swift
...ptions: .DataReadingMappedIfSafe, error: nil)
{
if let jsonResult: NSDictionary = NSJSONSerialization.JSONObjectWithData(jsonData, options: NSJSONReadingOptions.MutableContainers, error: nil) as? NSDictionary
{
if let persons : NSArray = jsonResult["person"] as? NSArr...