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【PM干货】2015年阿里业务型PM笔试题 - 项目管理 - 清泛网 - 专注C/C++及内核技术
...型PM笔试题一、客观题（总共十题）下面那个文件是用户系统间的数据传输：1、UML2、HTML3、XML4、WML458、346、908、739、（）正方体六个面分别是红、...一、客观题（总共十题）
下面那个文件是用户系统间的数据传输：
1、UML 2...
二维码的生成细节及原理 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...要通过BCH Code来计算
然后15个bits还要与101010000010010做XOR操作。这样就保证不会因为我们选用了00的纠错级别和000的Mask，从而造成全部为白色，这会增加我们的扫描器的图像识别的困难。
下面是一个示例：
关于Error Correction L...
Javascript Thousand Separator / string format [duplicate]
...ch is exactly what kaiser suggests below: toLocaleString
So you can do:
(1234567.89).toLocaleString('en') // for numeric input
parseFloat("1234567.89").toLocaleString('en') // for string input
The function implemented below works, too, but simply isn't necessary.
(I thought perhap...
致PHP路上的“年轻人” - 杂谈 - 清泛网 - 专注C/C++及内核技术
...们分别看看这两类项目。
复杂的项目。类似与内部的CMS系统、CRM系统等等，业务繁琐、数据流混杂、耦合的模块较多，这类项目复杂繁琐，适合PHP新人快速熟悉业务、快速实现子环节功能，对接多个模块练就一身把多个数据源...
How do I return multiple values from a function in C?
...
123
I don't know what your string is, but I'm going to assume that it manages its own memory.
You...
Python os.path.join on Windows
...
123
To be even more pedantic, the most python doc consistent answer would be:
mypath = os.path.jo...
Convert array of strings to List
...ystem.Linq;
// ...
public void My()
{
var myArray = new[] { "abc", "123", "zyx" };
List<string> myList = myArray.ToList();
}
PS. There's also ToArray() method that works in other way.
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...
Dynamically select data frame columns using $ and a character value
...is a reproducible example below:
# set seed for reproducibility
set.seed(123)
df <- data.frame( col1 = sample(5,10,repl=T) , col2 = sample(5,10,repl=T) , col3 = sample(5,10,repl=T) )
# We want to sort by 'col3' then by 'col1'
sort_list <- c("col3","col1")
# Use 'do.call' to call order. S...
Converting String to Int with Swift
...
swift 4.0
let stringNumber = "123"
let number = Int(stringNumber) //here number is of type "Int?"
//using Forced Unwrapping
if number != nil {
//string is converted to Int
}
you could also use Optional Binding other than forced binding.
eg...
How to compare two floating point numbers in Bash?
...result back to the shell in a proper, machine-readable way. if awk -v n1="123.456" -v n2="3.14159e17" 'BEGIN { exit (n1 <= n2) }' /dev/null; then echo bigger; else echo not; fi ... though note how the condition is inverted (the exit status 0 means success to the shell).
– t...