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How does the HyperLogLog algorithm work?
...bers (in binary) starts with "1", 25% starts with "01", 12,5% starts with "001". This means that if you observe a random stream and see a "001", there is a higher chance that this stream has a cardinality of 8.
(The prefix "00..1" has no special meaning. It's there just because it's easy to find th...
How do I print the type or class of a variable in Swift?
...able true is of Type Bool.
Variable maple is of Type String.
Variable Swift001.Person is of Type Person.
Variable Swift001.Patient is of Type Patient.
Variable Swift001.Doctor is of Type Doctor.
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Is R's apply family more than syntactic sugar?
...sewhere anyway. It's true of any function. If I write a sin that takes 0.001s and someone else writes one that takes 0.002 who cares?? Well, as soon as you have to do a bunch of them you care.
– John
Feb 3 '11 at 15:29
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How can I parse a string with a comma thousand separator to a number?
...oking for: 3,00 € also is replaced to 3.00. Just a note, that 3,001 is formatted to 3001. To avoid this, input should always be with decimal symbols. E.g. 3,001.00€ 3,001.00 converts correctly. Also, please, update jsfiddle. 0,124 there is still converted to 124
–...
Installing Java on OS X 10.9 (Mavericks)
... below, there is a newer version of this same package:
Java for OS X 2014-001
Java for OS X 2014-001 (Correcting dead line above)
Java for OS X 2014-001 includes installation improvements, and supersedes all previous versions of Java for OS X. This package installs the same version of Java 6 i...
Merging objects (associative arrays)
...query you can call $.extend
var obj1 = {a: 1, b: 2};
var obj2 = {a: 4, c: 110};
var obj3 = $.extend(obj1, obj2);
obj1 == obj3 == {a: 4, b: 2, c: 110} // Pseudo JS
(assoc. arrays are objects in js)
look here: http://api.jquery.com/jQuery.extend/
edit: Like rymo suggested, it's better to do ...
Getting a map() to return a list in Python 3.x
...
Do this:
list(map(chr,[66,53,0,94]))
In Python 3+, many processes that iterate over iterables return iterators themselves. In most cases, this ends up saving memory, and should make things go faster.
If all you're going to do is iterate over this li...
解决：mfcs110ud.lib(dllmodul.obj) : error LNK2005: _DllMain@12 已经在 ...
原因分析：
_USRDLL定义有的话，MFC会自动生成一个DllMain入口函数，
这时在dll源码中额外又添加了一个DllMain入口函数，就会出现重定义冲突。
Android Python Programming [closed]
...nswered Feb 14 '13 at 3:03
eazar001eazar001
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JUnit assertEquals(double expected, double actual, double epsilon) [duplicate]
...3.14159 but would take anywhere from 3.14059 to 3.14259 (that is, within 0.001), then you should write something like
double myPi = 22.0d / 7.0d; //Don't use this in real life!
assertEquals(3.14159, myPi, 0.001);
(By the way, 22/7 comes out to 3.1428+, and would fail the assertion. This is a good...