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check android application is in foreground or not? [duplicate]
I went through a lot of answers for this question.But it's all about single activity..How to check whether the whole app is running in foreground or not ?
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How to switch a user per task or set of tasks?
...te a command with sudo privileges ( sudo: yes ) because I'd like to do it for a certain user. Ideally I'd much rather use sudo to switch to that user and execute the commands normally. Because then I won't have to do my usual post commands clean up such as chowning directories. Here's a snippet from...
Why do I have to access template base class members through the this pointer?
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Short answer: in order to make x a dependent name, so that lookup is deferred until the template parameter is known.
Long answer: when a compiler sees a template, it is supposed to perform certain checks immediately, without s...
What's the difference between compiled and interpreted language?
...at out of my system, here's an answer:
In a compiled implementation, the original program is translated into native machine instructions, which are executed directly by the hardware.
In an interpreted implementation, the original program is translated into something else. Another program, called ...
nil detection in Go
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The compiler is pointing the error to you, you're comparing a structure instance and nil. They're not of the same type so it considers it as an invalid comparison and yells at you.
What you want to do here is to compare a pointer to your config instance to...
Matching a space in regex
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If you're looking for a space, that would be " " (one space).
If you're looking for one or more, it's " *" (that's two spaces and an asterisk) or " +" (one space and a plus).
If you're looking for common spacing, use "[ X]" or "[ X][ X]*" or...
Why do we use __init__ in Python classes?
...__init__ doesn't initialize a class, it initializes an instance of a class or an object. Each dog has colour, but dogs as a class don't. Each dog has four or fewer feet, but the class of dogs doesn't. The class is a concept of an object. When you see Fido and Spot, you recognise their similarity, th...
EJB's - when to use Remote and/or local interfaces?
... a remote call, using RMI semantics and all the overhead it implies (a network call and object serialization for every method call). EJB clients had to pay this performance penalty even when collocated in the same virtual machine with the EJB container.
Later, Sun realized most business applicatio...
Set element width or height in Standards Mode
Is it possible to set width or height of HTML element (ex. <div> ) in JavaScript in Standards Mode?
2 Answers
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pythonw.exe or python.exe?
Long story short: pythonw.exe does nothing, python.exe accepts nothing (which one should I use?)
6 Answers
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