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Storing SHA1 hash values in MySQL
...d just waste an additional byte for the length of the fixed-length field.
And I also wouldn’t store the value the SHA1 is returning. Because it uses just 4 bit per character and thus would need 160/4 = 40 characters. But if you use 8 bit per character, you would only need a 160/8 = 20 character l...
How to get a list of installed android applications and pick one to run
...sked a similar question to this earlier this week but I'm still not understanding how to get a list of all installed applications and then pick one to run.
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How to detect when WIFI Connection has been established in Android?
...that a valid network connection for HTTP exists. What should I listen for and what additional tests do I need to make to know that a valid connection exists.
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String Concatenation using '+' operator
Looking at the string class metadata, I only see the operators == and != overloaded. So how is it able to perform concatenation for the ' + ' operator?
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Animate visibility modes, GONE and VISIBLE
... the visibility of a linearlayout with other widgets, from GONE to VISIBLE and the opposite.Im using togglebuttons to show and hide. Here's an image to show what i want to do:
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Extension methods must be defined in a non-generic static class
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The class which defines an extension method must be non-generic, static and non-nested
Every extension method must be a static method
The first parameter of the extension method should use the this keyword.
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What does (angle brackets) mean in Java?
I am currently studying Java and have recently been stumped by angle brackets(). What exactly do they mean?
6 Answers
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Set theme for a Fragment
...gment.onCreateView you get LayoutInflater parameter, which inflates views, and it holds Context used for theme, actually this is the Activity. So your inflated views use Activity's theme.
To override theme, you may call LayoutInflater.cloneInContext, which mentions in Docs that it may be used for c...
Are Java static calls more or less expensive than non-static calls?
...ful to know they are at least as fast, if not faster than instance methods and should not be ruled out on a performance basis.
– Will
Oct 21 '17 at 13:11
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Override Python's 'in' operator?
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Zoran, I agree, and I even upvoted this answer and not the other. I'm just pointing out that a truly good answer should always link to docs, if available.
– Peter Hansen
Aug 31 '12 at 21:55
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