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Numpy: find first index of value fast
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edited Oct 21 '13 at 7:44
Jacques Kvam
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answere...
Converting a Java Keystore into PEM Format
...rtificate:
Data:
Version: 3 (0x2)
Serial Number: 1237334757 (0x49c03ae5)
Signature Algorithm: dsaWithSHA1
Issuer: C=AU, ST=Victoria, L=Melbourne, CN=foo.example.com
Validity
Not Before: Mar 18 00:05:57 2009 GMT
Not After : Jun 16 00...
C++ performance challenge: integer to std::string conversion
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#include <string>
const char digit_pairs[201] = {
"00010203040506070809"
"10111213141516171819"
"20212223242526272829"
"30313233343536373839"
"40414243444546474849"
"50515253545556575859"
"60616263646566676869"
"70717273747576777879"
"80818283848586878889"
"909192939...
Logstash实践: 分布式系统的日志监控 - 更多技术 - 清泛网 - 专注C/C++及内核技术
Logstash实践: 分布式系统的日志监控文 赵杰 2015.11.041. 前言服务端日志你有多重视？我们没有日志有日志，但基本不去控制需要输出的内容经常微调日志，只输出我们想看和有...文/赵杰 2015.11.04
1. 前言
服务端日志你有多重视？...
get list of pandas dataframe columns based on data type
...certain type, you can use groupby:
>>> df = pd.DataFrame([[1, 2.3456, 'c', 'd', 78]], columns=list("ABCDE"))
>>> df
A B C D E
0 1 2.3456 c d 78
[1 rows x 5 columns]
>>> df.dtypes
A int64
B float64
C object
D object
E int64
dtype: ob...
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奥特加贫困的童年
由于温饱难以解决，8岁那年奥特加举家搬往拉科鲁尼亚，这是个极其混乱的小渔村。13岁那年...
Is it possible to send a variable number of arguments to a JavaScript function?
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214
Update: Since ES6, you can simply use the spread syntax when calling the function:
func(...arr)...
Accessing inactive union member and undefined behavior?
...ge to C11 permitting union type-punning):
3.9 Types [basic.types]
4 - The object representation of an object of type T is the sequence of N unsigned char objects taken up by
the object of type T, where N equals sizeof(T). The value representation of an object is the set of bits that
hol...
Linear Regression and group by in R
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49
Here's one way using the lme4 package.
library(lme4)
d <- data.frame(state=rep(c('NY', 'C...