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Log to the base 2 in python
...s the natural logarithm (base e) of x.
In [25]: math.log(8,2)
Out[25]: 3.0
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do N times (declarative syntax)
... here's a way to do call something() 1, 2 and 3 times respectively:
It's 2017, you may use ES6:
[1,2,3].forEach(i => Array(i).fill(i).forEach(_ => {
something()
}))
or in good old ES5:
[1,2,3].forEach(function(i) {
Array(i).fill(i).forEach(function() {
something()
})
}))
In bo...
C++应用程序添加VBScript和JavaScript支持 - C/C++ - 清泛网移动版 - 专注C/C++及内核技术
...tParam(aParam)
{
var strPresent = "Parameter is : " + (aParam.length>0 ? "Present": "Not present");
return strPresent;
}
The same technique may be used in VBScript. This allows you to detect variable length argument at run time. To call a function without argument, a SAFERRAY is creat...
HTML text input field with currency symbol
...
104
Consider simulating an input field with a fixed prefix or suffix using a span with a border aro...
Batch script loop
I need to execute a command 100-200 times, and so far my research indicates that I would either have to copy/paste 100 copies of this command, OR use a for loop, but the for loop expects a list of items, hence I would need 200 files to operate on, or a list of 200 items, defeating the point.
...
Two divs side by side - Fluid display
...
Try a system like this instead:
.container {
width: 80%;
height: 200px;
background: aqua;
margin: auto;
padding: 10px;
}
.one {
width: 15%;
height: 200px;
background: red;
float: left;
}
.two {
margin-left: 15%;
height: 200px;
background...
Python str vs unicode types
...de-point level. For example you can do:
>>> 'àèìòù'
'\xc3\xa0\xc3\xa8\xc3\xac\xc3\xb2\xc3\xb9'
>>> print 'àèìòù'.replace('\xa8', '')
à�ìòù
What before was valid UTF-8, isn't anymore. Using a unicode string you cannot operate in such a way that the resulting strin...
How to simplify a null-safe compareTo() implementation?
...
bluish
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answered Apr 5 '12 at 9:29
DagDag
8,11...
Windows batch files: .bat vs .cmd?
...RRORLEVEL
only on errors.
In other words, if ERRORLEVEL is set to non-0 and then you run one of those commands, the resulting ERRORLEVEL will be:
left alone at its non-0 value in a .bat file
reset to 0 in a .cmd file.
...
How to get the caller's method name in the called method?
...
Yuval Pruss
4,69066 gold badges2929 silver badges5454 bronze badges
answered Apr 16 '10 at 15:20
Alex MartelliAlex Ma...