大约有 46,000 项符合查询结果（耗时：0.0253秒） [XML]
Fastest way to replace NAs in a large data.table
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10 Answers
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Obfuscated C Code Contest 2006. Please explain sykes2.c
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1824
Let's de-obfuscate it.
Indenting:
main(_) {
_^448 && main(-~_);
putchar(--_...
Cannot ping AWS EC2 instance
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edited Nov 1 '17 at 14:18
Undo♦
25k2121 gold badges9999 silver badges124124 bronze badges
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Does JavaScript have a method like “range()” to generate a range within the supplied bounds?
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std::vector performance regression when enabling C++11
...nteresting performance regression in a small C++ snippet, when I enable C++11:
1 Answer
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What is the significance of initializing direction arrays below with given values when developing ch
...we want to add onto its x and its y value to move it to a nearby location, 1,0 is east, -1,0 is west, 0,1 is south, 0,-1 is north and so on.
(Here I have said top left is 0,0 and bottom right is 4,4 and shown what move each index of the arrays will make from the central point, X, at 2,2.)
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How to split a string and assign it to variables
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import (
"fmt"
"strings"
)
func main() {
s := strings.Split("127.0.0.1:5432", ":")
ip, port := s[0], s[1]
fmt.Println(ip, port)
}
Output:
127.0.0.1 5432
One step, for example,
package main
import (
"fmt"
"net"
)
func main() {
host, port, err := net.SplitHost...
How to model type-safe enum types?
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189
http://www.scala-lang.org/docu/files/api/scala/Enumeration.html
Example use
object Main ex...
Find integer index of rows with NaN in pandas dataframe
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11 Answers
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MySQL一次主从数据不一致的问题解决过程 - 数据库(内核) - 清泛网 - 专注C/...
...库缺少的数据补上
下面是能想到和找到的几个方案
1 从新从0开始同步，虽然对主库的使用没有影响，但是那么大的数据量，对性能，网络影响有点大，数据丢失的应该很少
2 主库dump数据，锁库，然后同步，不好。 影响业...