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SparseArray vs HashMap
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SparseArray can be used to replace HashMap when the key is a primitive type.
There are some variants for different key/value types, even though not all of them are publicly available.
Benefits are:
Allocation-free
No boxing
Drawbacks:
Generally slower, not indicated for lar...
Python, Unicode, and the Windows console
...codeError: 'charmap' codec can't encode character .... error. I assume this is because the Windows console does not accept Unicode-only characters. What's the best way around this? Is there any way I can make Python automatically print a ? instead of failing in this situation?
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GOBIN not set: cannot run go install
...thin your GOPATH folder.
See GOPATH environment variable (where 'DIR' is a GOPATH folder):
The bin directory holds compiled commands.
Each command is named for its source directory, but only the final element, not the entire path. That is, the command with source in DIR/src/foo/quux is in...
How do I get the current GPS location programmatically in Android?
...n to get current location's GPS coordinates.
Complete example source code is in Get Current Location coordinates , City name - in Android.
See how it works:
All we need to do is add this permission in the manifest file:
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION...
Is there a “do … until” in Python? [duplicate]
Is there a
4 Answers
4
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Is there a replacement for unistd.h for Windows (Visual C)?
...atively simple console program written for Unix to the Windows platform ( Visual C++ 8.0 ). All the source files include "unistd.h", which doesn't exist. Removing it, I get complaints about misssing prototypes for 'srandom', 'random', and 'getopt'.
I know I can replace the random functions, and I'm...
How to detect a Christmas Tree? [closed]
...g techniques could be used to implement an application that detects the Christmas trees displayed in the following images?
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What's the difference between MyISAM and InnoDB? [duplicate]
I understand that this question has been asked before, but most of the time it is asked in relation to a specific database or table. I cannot find an answer on this site that describes the two engines and their differences without respect to someones specific database.
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What is the difference between HAVING and WHERE in SQL?
What is the difference between HAVING and WHERE in an SQL SELECT statement?
20 Answers
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Copy a file in a sane, safe and efficient way
...m dst("to.ogv", std::ios::binary);
dst << src.rdbuf();
}
This is so simple and intuitive to read it is worth the extra cost. If we were doing it a lot, better to fall back on OS calls to the file system. I am sure boost has a copy file method in its filesystem class.
There is a C m...