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Centering floating divs within another div
...t;/span>
</div>
with CSS:
.wpr
{
width: 400px;
height: 100px;
background: pink;
padding: 10px 30px;
}
.wpr span
{
width: 50px;
height: 50px;
background: green;
float: left; /* **children floated left** */
margin: 0 5px;
}
(This is the (expected - an...
How to determine whether a Pandas Column contains a particular value
...
I did a few simple tests:
In [10]: x = pd.Series(range(1000000))
In [13]: timeit 999999 in x.values
567 µs ± 25.6 µs per loop (mean ± std. dev. of 7 runs, 1000 loops each)
In [15]: timeit x.isin([999999]).any()
9.54 ms ± 291 µs per loop (mean ± std. dev. of 7 runs, 100 l...
Thread vs ThreadPool
...sts for new work items (I believe this is only in .NET 3.5)
If you queue 100 thread pool tasks, it will only use as many threads as have already been created to service these requests (say 10 for example). The thread pool will make frequent checks (I believe every 500ms in 3.5 SP1) and if there ar...
How to toggle a value in Python
... almost the fastest too
>>> stmt1="""
toggle=0
for i in xrange(0,100):
toggle = 1 if toggle == 0 else 0
"""
>>> stmt2="""
x=[1,0]
toggle=0
for i in xrange(0,100):
toggle=x[toggle]
"""
>>> t1=timeit.Timer(stmt=stmt1)
>>> t2=timeit.Timer(stmt=stmt2)
>>...
Turning a Comma Separated string into individual rows
...R BY SomeID
-- OPTION (maxrecursion 0)
-- normally recursion is limited to 100. If you know you have very long
-- strings, uncomment the option
Output
SomeID | OtherID | DataItem
--------+---------+----------
1 | 9 | 18
1 | 9 | 20
1 | 9 | 22 ...
How do I move the turtle in LOGO? [closed]
...is all about moving the turtle... you give it commands like this:
Forward 100
Right 45
You can do stuff like repeating commands too:
Repeat 8 [Forward 100 Right 45] ; Draw an octagon
(What do I win? 8-)
share
...
UDP vs TCP, how much faster is it? [closed]
... The most important thing TCP gives you is congestion control: you can run 100 TCP connections across a DSL link all going at max speed, and all 100 connections will be productive, because they all "sense" the available bandwidth. Try that with 100 different UDP applications, all pushing packets as ...
Easy interview question got harder: given numbers 1..100, find the missing number(s) given exactly k
I had an interesting job interview experience a while back. The question started really easy:
47 Answers
...
Do Swift-based applications work on OS X 10.9/iOS 7 and lower?
...
100
Update - As per Xcode 6 Beta 4
iOS 7 and OS X 10.9 minimum deployment target
The Swift compi...
80后夫妻创业，如今身价68亿，怎么做到？ - 资讯 - 清泛网 - 专注C/C++及内核技术
...个月生活费才600元，能有什么背景”。
大二赚取第一个100万
要谈论汉鼎股份的资源整合能力，还真得回到2001年夏天。浙江大学经管学院大二学生王麒诚担任着校学生会实践部部长一职，经常到校外拉赞助搞活动。他有一位叫...