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Call by name vs call by value in Scala, clarification needed
... => Int).
def callByValue(x: Int) = {
println("x1=" + x)
println("x2=" + x)
}
def callByName(x: => Int) = {
println("x1=" + x)
println("x2=" + x)
}
Now what happens when we call them with our side-effecting function?
scala> callByValue(something())
calling something
x1=1
x2=1
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Add to Array jQuery
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For JavaScript arrays, you use push().
var a = [];
a.push(12);
a.push(32);
For jQuery objects, there's add().
$('div.test').add('p.blue');
Note that while push() modifies the original array in-place, add() returns a new jQuery object, it does not modify the original one.
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MFC学习总结 (90个技巧) dlg 上建立View - C/C++ - 清泛网 - 专注C++内核技术
...top;
//调整属性页的大小和位置
m_tabsheet.SetWindowPos(NULL, 225, 225, width-82, height,SWP_NOACTIVATE);
//属性页的添加完成。如果要添加多个属性页，则只需要增加多个对象，如下：
m_tabsheet.AddPage(&m_skatch1);
m_tabsheet.AddPage(&m_skatch2);
// ....
Bitwise operation and usage
... the lower 4 bits of an integer, you AND it with 15 (binary 1111) so:
201: 1100 1001
AND 15: 0000 1111
------------------
IS 9 0000 1001
The zero bits in 15 in that case effectively act as a filter, forcing the bits in the result to be zero as well.
In addition, >> and << ar...
Property getters and setters
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239
Setters and Getters apply to computed properties; such properties do not have storage in the i...
SQL-Server: Is there a SQL script that I can use to determine the progress of a SQL Server backup or
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12
Yes. If you have installed sp_who2k5 into your master database, you can simply run:
sp_who2k5 1...
Does JavaScript guarantee object property order?
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12 Answers
12
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INSERT IF NOT EXISTS ELSE UPDATE?
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edited Jul 2 '14 at 6:34
answered Sep 3 '10 at 10:55
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Zoom in on a point (using scale and translate)
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John Weisz
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answered May 23 '15 at 9:12
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