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How does this print “hello world”?

...g the number with the mask 31₁₀ = 11111₂ in the sentence l & 31 Now the code maps the 5-bit value to its corresponding 7-bit ascii character. This is the tricky part, check the binary representations for the lowercase alphabet letters in the following table: ascii | ascii | ...
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What would a “frozen dict” be?

...to want such a type is when memoizing function calls for functions with unknown arguments. The most common solution to store a hashable equivalent of a dict (where the values are hashable) is something like tuple(sorted(kwargs.iteritems())). This depends on the sorting not being a bit insane. Pyth...
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Android: install .apk programmatically [duplicate]

...s(Intent.FLAG_ACTIVITY_NEW_TASK); startActivity(intent); That is correct now, my auto-update is working. Thanks for help. =) Edit 20.7.2016: After a long time, I had to use this way of updating again in another project. I encountered a number of problems with old solution. A lot of things have ...
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What is the use of interface constants?

...he constant interface is not part of the exported API module or when it is nowhere implemented, I don't see the problem. Using const final classes is ugly: you need a private constructor which clutters the code as it has no use. – Lawrence Sep 28 '18 at 11:08 ...
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Java to Clojure rewrite

...mutable state and develop pure (side-effect free) functions. You probably know all this already :-) Anyway, this philosophy tends to lead towards something of a "bottom up" development style where you focus the initial efforts on building the right set of tools to solve your problem, then finally p...
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What's the difference between django OneToOneField and ForeignKey?

...the name of the reporter. In [8]: A1.reporter.first_name Out[8]: 'Rick' Now create the Reporter object R2 by running the following python code. In [9]: R2 = Reporter.objects.create(first_name='Harry') In [10]: R2.save() Now try to add R2 to the Article object A1. In [13]: A1.reporter.add(R2)...
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HTML table with fixed headers?

... @user5249203 I know you asked a few month ago but I had the same problem and it was due to border-collapse: see this : stackoverflow.com/questions/33777751/…. – archz Nov 4 '16 at 9:59 ...
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How to test my servlet using JUnit

I have created a web system using Java Servlets and now want to make JUnit testing. My dataManager is just a basic piece of code that submits it to the database. How would you test a Servlet with JUnit? ...
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Does it make sense to use Require.js with Angular.js? [closed]

... itself, there's this, from Brian Ford, author of the Angular Batarang and now a member of the Angular core team: I don't recommend using RequireJS with AngularJS. Although it's certainly possible, I haven't seen any instance where RequireJS was beneficial in practice. So, on the very specific...
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Chrome Dev Tools - Modify javascript and reload

... thank you. I used to use Fiddler for Windows before that extension. Right now I can debug remote files on any platform. – Ahmad Alfy Nov 22 '15 at 15:35 ...