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How can I get the external SD card path for Android 4.0+?
...age devices that use an sdcard as their main storage
HTC G1 (cyanogenmod 6.1)
HTC G1 (stock)
HTC Vision/G2 (stock)
Excepting the Incredible all these devices only returned their removable storage. There are probably some extra checks I should be doing, but this is at least a bit better than any ...
Convert a row of a data frame to vector
...re is an example:
df_1 = data.frame(V1 = factor(11:15),
V2 = 21:25)
df_1[1,] %>% as.numeric() # you expect 11 21 but it returns
[1] 1 21
Here is another example (by default data.frame() converts characters to factors)
df_2 = data.frame(V1 = letters[1:5],
...
What is __future__ in Python used for and how/when to use it, and how it works
...
Or is it like saying "Since this is python v2.7, use that different 'print' function that has also been added to python v2.7, after it was added in python 3. So my 'print' will no longer be statements (eg print "message" ) but functions (eg, print("message", options)....
How can I brew link a specific version?
...: Aug 26 2014 15:14:01)
Copyright (c) 1997-2014 The PHP Group
Zend Engine v2.4.0, Copyright (c) 1998-2014 Zend Technologies
$ brew unlink php54
$ brew switch php55 5.5.16
$ php --version
PHP 5.5.16 (cli) (built: Sep 9 2014 14:27:18)
Copyright (c) 1997-2014 The PHP Group
Zend Engine v2.5.0, Cop...
What's wrong with using == to compare floats in Java?
...so they may not report as exactly equal. For example, setting a float to "6.1" and then printing it out again, you may get a reported value of something like "6.099999904632568359375". This is fundamental to the way floats work; therefore, you don't want to compare them using equality, but rather ...
How can I perform a culture-sensitive “starts-with” operation from the middle of a string?
...th2,
CompareOptions options) {
int length1=prefix.Length, v2, v1;
if(0==(v1=compareInfo.Compare(
prefix, 0, length1, source, startIndex, length2, options))
) {
return 0;
}
else {
if(0==(v2=compareInfo.Compare(
...
How to wait for several Futures?
...urrently
f3 <- func3.concurrently
} yield for {
v1 <- f1
v2 <- f2
v3 <- f3
} yield (v1,v2,v3)
}.future
f.onFailure { case t => println("future failed $t") }
In the example above, f1,f2 and f3 will run concurrently and if any fail in any order the future of the tuple...
How do I compile a Visual Studio project from the command-line?
...many version of the msbuild.exe.
C:\Windows\Microsoft.NET\Framework64\v2.0.50727\msbuild.exe
C:\Windows\Microsoft.NET\Framework64\v3.5\msbuild.exe
C:\Windows\Microsoft.NET\Framework64\v4.0.30319\msbuild.exe
C:\Windows\Microsoft.NET\Framework\v2.0.50727\msbuild.exe
C:\Windows\Microsoft.N...
Can you do greater than comparison on a date in a Rails 3 search?
...
Rails 6.1 added a new 'syntax' for comparison operators in where conditions, for example:
Post.where('id >': 9)
Post.where('id >=': 9)
Post.where('id <': 3)
Post.where('id <=': 3)
So your query can be rewritten as foll...
How do I reverse a C++ vector?
...e vector in-place. You could create a new vector with std::vector<T> v2( v1.rbegin(), v1.rend() ); v2.swap(v1); which would effectively use your solution. I don't see how it is more elegant or advantageous in any way to using std::reverse though.
– CashCow
...