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深入浅出计算机字符集编码 - C/C++ - 清泛网 - 专注C/C++及内核技术
...-127个是ASCII标准的编码，后128-255是拓展ASCII编码，在日文操作系统默认编码为shift-jis的环境中日文的半角片假名由拓展ASCII的0xa1-0xdf表示。中文操作系统则完全不同，要表示日文半角片假名必须使用日文的编码方式（EUC_JP或shift-j...
Why is string concatenation faster than array join?
...and maybe other.
a = {
nodeA: 'abc',
nodeB: 'def'
}
And b = a.concat('123')
b = {
nodeA: a, /* {
nodeA: 'abc',
nodeB: 'def'
} */
nodeB: '123'
}
So in the simplest case the VM has to do nearly no work. The only problem is that this slows down...
Set Page title using UI-Router
... return `Bar Code ${params.code}`;
}
});
For the URL path /bar/code/123 that would show "Bar Code 123" as the page title. Note that I'm using ECMAScript 6 syntax to format the string and extract params.code.
It would be nice if someone who had the time would put something like this into a di...
MySQL IF NOT NULL, then display 1, else display 0
... c
LEFT JOIN addresses a ON c.customerid = a.customerid
WHERE customerid = 123
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C++STL容器使用经验总结 - C/C++ - 清泛网 - 专注C/C++及内核技术
...r和标准关联容器－或许这就是优先顺序。
对插入和删除操作，你需要事务语义吗？如果是，只能选择list。因为在标准容器中，只有list对多个元素的插入操作提供了事务语义。
deque是唯一的、迭代器可能会变为无效（插入操作...
Find element's index in pandas Series
... [122]: myseries = pd.Series([1,7,0,7,5], index=['a','b','c','d','e'])
In [123]: list(myseries[myseries==7].index)
Out[123]: ['b', 'd']
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How to deal with floating point number precision in JavaScript?
...OfDecimals(Y) = ExpectedNumberOfDecimals. That is to say that if we have 0.123 * 0.12 then we know that there will be 5 decimal places because 0.123 has 3 decimal places and 0.12 has two. Thus if JavaScript gave us a number like 0.014760000002 we can safely round to the 5th decimal place without fea...
How to capitalize the first letter in a String in Ruby
..."hello".capitalize #=> "Hello"
"HELLO".capitalize #=> "Hello"
"123ABC".capitalize #=> "123abc"
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html - table row like a link
...hn Smith</a></td>
<td><a href="person1.html">123 Fake St</a></td>
<td><a href="person1.html">90210</a></td>
</tr>
<tr>
<td><a href="person2.html">Peter Nguyen</a></td>
<...
Is there an easy way to create ordinals in C#?
...inal());
Assert.AreEqual("122nd", 122.Ordinal());
Assert.AreEqual("123rd", 123.Ordinal());
Assert.AreEqual("124th", 124.Ordinal());
}
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