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Selecting data frame rows based on partial string match in a column
... answered Oct 24 '12 at 6:31
A5C1D2H2I1M1N2O1R2T1A5C1D2H2I1M1N2O1R2T1
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Linux反编译全攻略 - 操作系统(内核) - 清泛网 - 专注C/C++及内核技术
...8048970 55 push ebp
08048971 89 E5 mov ebp, esp
08048973 81 EC 08 00 00 00 sub esp, 0x8
08048979 68 00 00 00 00 push 0x0
0804897E 68 03 00 00 00 ...
Is the 'override' keyword just a check for a overridden virtual method?
...here is not, the compiler will error out.
http://en.wikipedia.org/wiki/C%2B%2B11#Explicit_overrides_and_final
Edit (attempting to improve a bit the answer):
Declaring a method as "override" means that that method is intended to rewrite a (virtual) method on the base class. The overriding method ...
Programmer Puzzle: Encoding a chess board state throughout a game
...y specifies the minimal information necessary. Consider this opening:
e4 e5
Nf3 Nc6
…
which translates to:
White moves king’s pawn from e2 to e4 (it is the only piece that can get to e4 hence “e4”);
Black moves the king’s pawn from e7 to e5;
White moves the knight (N) to f3;
Black mo...
Copying files from host to Docker container
...cker inspect -f '{{.Id}}' d8e703d7e303
d8e703d7e3039a6df6d01bd7fb58d1882e592a85059eb16c4b83cf91847f88e5
$ sudo cp file.txt /var/lib/docker/aufs/mnt/**d8e703d7e3039a6df6d01bd7fb58d1882e592a85059eb16c4b83cf91847f88e5**/root/file.txt
...
Does a `+` in a URL scheme/host/path represent a space?
...ce list of corresponding URL encoded characters on W3Schools.
+ becomes %2B
space becomes %20
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无社交不商业，Uber将边缘化BAT - 资讯 - 清泛网 - 专注C/C++及内核技术
...。而社群的高级阶段，是人与人之间的自由联合。
C2B和B2C、罗辑思维、吴晓波书友会
过去的模式基本都是B2C或者，b2b2c，总之B总是排前面，商品在前，商家说了算。
有钱人去开设工厂，然后设置分销体系，有点品牌意识...
Easiest way to compare arrays in C#
... int[] a3 = new int[] { 1, 3 };
int[] a4 = null;
int[] a5 = null;
int[] a6 = new int[0];
Console.WriteLine(a1.ItemsEqual(a2)); // Output: True.
Console.WriteLine(a2.ItemsEqual(a3)); // Output: False.
Console.WriteLine(a4.ItemsEqual(a5)); // Output...
Local variables in nested functions
...())
[('cow', <function get_petters.<locals>.pet_function at 0x7ff2b988d790>),
('dog', <function get_petters.<locals>.pet_function at 0x7ff2c18f51f0>),
('cat', <function get_petters.<locals>.pet_function at 0x7ff2c14a9f70>)]
However, take a look at the cells th...
How to format a number as percentage in R?
... in (0,1) to a percentage in 2 digits:
library(microbenchmark)
x = runif(1e5)
microbenchmark(times = 100L, andrie1(), andrie2(), richie(), krlmlr())
# Unit: milliseconds
# expr min lq mean median uq max
# 1 andrie1() 91.08811 95.51952 99.54368 97.39548 102.75...