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Can't create handler inside thread that has not called Looper.prepare()
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You're calling it from a worker thread. You need to call Toast.makeText() (and most other functions dealing with the UI) from within the main thread. You could use a handler, for example.
Look up Communicating with the UI Thread in the documentation....
How to see an HTML page on Github as a normal rendered HTML page to see preview in browser, without
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The most comfortable way to preview HTML files on GitHub is to go to https://htmlpreview.github.io/ or just prepend it to the original URL, i.e.: https://htmlpreview.github.io/?https://github.com/bartaz/impress.js/blob/master/index.html
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How to pass command line arguments to a rake task
...to be inside arrays:
namespace :thing do
desc "it does a thing"
task :work, [:option, :foo, :bar] do |task, args|
puts "work", args
end
task :another, [:option, :foo, :bar] do |task, args|
puts "another #{args}"
Rake::Task["thing:work"].invoke(args[:option], args[:foo], args[:...
run main class of Maven project [duplicate]
...rgs="arg0 arg1" to pass arguments.
If you're on Windows, apply quotes for exec.mainClass and exec.args:
mvn exec:java -D"exec.mainClass"="com.example.Main"
If you're doing this regularly, you can add the parameters into the pom.xml as well:
<plugin>
<groupId>org.codehaus.mojo&...
Fast check for NaN in NumPy
I'm looking for the fastest way to check for the occurrence of NaN ( np.nan ) in a NumPy array X . np.isnan(X) is out of the question, since it builds a boolean array of shape X.shape , which is potentially gigantic.
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Android - startActivityForResult immediately triggering onActivityResult
... activities from the main activity in my app using the call startActivityForResult(intent, ACTIVITY_TYPE) , and they are all working but one.
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Is there a “not equal” operator in Python?
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Use !=. See comparison operators. For comparing object identities, you can use the keyword is and its negation is not.
e.g.
1 == 1 # -> True
1 != 1 # -> False
[] is [] #-> False (distinct objects)
a = b = []; a is b # -> True (same object...
How to convert a string of numbers to an array of numbers?
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My 2 cents for golfers:
b="1,2,3,4".split`,`.map(x=>+x)
backquote is string litteral so we can omit the parenthesis (because of the nature of split function) but it is equivalent to split(','). The string is now an array, we just h...
Finding what branch a Git commit came from
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While Dav is correct that the information isn't directly stored, that doesn't mean you can't ever find out. Here are a few things you can do.
Find branches the commit is on
git branch -a --contains <commit>
This will tell you all...
Where is the itoa function in Linux?
...ing. Linux does not seem to have itoa() , is there an equivalent function or do I have to use sprintf(str, "%d", num) ?
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