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“Default Activity Not Found” on Android Studio upgrade
I upgraded IntelliJ Idea from 12.0.4 to 12.10.
73 Answers
73
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What is the fastest or most elegant way to compute a set difference using Javascript arrays?
...'t know if this is most effective, but perhaps the shortest
A = [1, 2, 3, 4];
B = [1, 3, 4, 7];
diff = A.filter(function(x) { return B.indexOf(x) < 0 })
console.log(diff);
Updated to ES6:
A = [1, 2, 3, 4];
B = [1, 3, 4, 7];
diff = A.filter(x => !B.includes(x) );
console.log(diff);
...
Remove rows with duplicate indices (Pandas DataFrame and TimeSeries)
...subset='index', keep='first').set_index('index')
1000 loops, best of 3: 1.54 ms per loop
>>> %timeit df3.groupby(df3.index).first()
1000 loops, best of 3: 580 µs per loop
>>> %timeit df3[~df3.index.duplicated(keep='first')]
1000 loops, best of 3: 307 µs per loop
Note that you ...
How can I find out the current route in Rails?
... |
edited Nov 25 '13 at 14:08
answered Jul 30 '09 at 10:48
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Calling clojure from java
...tln (str "(binomial 5 3): " (binomial 5 3)))
(println (str "(binomial 10042 111): " (binomial 10042 111)))
)
If you run it, you should see something like:
(binomial 5 3): 10
(binomial 10042 111): 49068389575068144946633777...
And here's a Java program that calls the -binomial function in the ...
How to scale threads according to CPU cores?
...
Ravindra babu
39.4k77 gold badges201201 silver badges180180 bronze badges
answered Dec 30 '09 at 15:51
JasCavJasCav
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Recommendation for compressing JPG files with ImageMagick
...
449
I use always:
quality in 85
progressive (comprobed compression)
a very tiny gausssian blur t...
Random string generation with upper case letters and digits
...hically more secure version; see https://stackoverflow.com/a/23728630/2213647:
''.join(random.SystemRandom().choice(string.ascii_uppercase + string.digits) for _ in range(N))
In details, with a clean function for further reuse:
>>> import string
>>> import random
>>> d...
BSS段、数据段、代码段、堆与栈 剖析 - C/C++ - 清泛网 - 专注C/C++及内核技术
...30000];
void main()
{
......
}
程序2:
int ar[300000] = {1, 2, 3, 4, 5, 6 };
void main()
{
......
}
发现程序2 编译之后所得的.exe 文件比程序1 的要大得多。当下甚为不解，于是手工编译了一下，并使用了/FAs 编译选项来查看了一下其各自...
How to sort in mongoose?
...
164
In Mongoose, a sort can be done in any of the following ways:
Post.find({}).sort('test').exec(f...