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Linear Regression and group by in R
...nual time series with one field for year (22 years) and another for state (50 states). I want to fit a regression for each state so that at the end I have a vector of lm responses. I can imagine doing for loop for each state then doing the regression inside the loop and adding the results of each re...
Fastest way to check if string contains only digits
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edited Sep 18 '15 at 16:35
answered Sep 18 '11 at 11:13
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Version vs build in Xcode
...t" as your Version (e.g., 3.4.0) and "Bundle version" as your Build (e.g., 500 or 1A500). If you don't see them both, you can add them. Those will map to the proper Version and Build textboxes on the Summary tab; they are the same values.
When viewing the Info tab, if you right-click and select Sho...
C# Sort and OrderBy comparison
...gt; persons = new List<Person>();
persons.Add(new Person("P005", "Janson"));
persons.Add(new Person("P002", "Aravind"));
persons.Add(new Person("P007", "Kazhal"));
Sort(persons);
OrderBy(persons);
const int COUNT = 1000000;
Stopwatch wa...
How to center canvas in html5
...le in IE11
Also, make sure you use a recent doctype such as xhtml or html 5.
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Preferred way to create a Scala list
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answered Aug 6 '09 at 20:56
Daniel C. SobralDaniel C. Sobral
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How to enumerate a range of numbers starting at 1
I am using Python 2.5, I want an enumeration like so (starting at 1 instead of 0):
12 Answers
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两种js滑动门(tab切换)效果 - 源码下载 - 清泛网 - 专注C/C++及内核技术
...960px;
margin: 0 auto;
border-bottom:1px #AACCEE solid;
background:#d5d5d5;
background-position:left;
background-repeat:repeat-y;
margin-bottom:2px;
}
.nTab .TabTitle{
clear: both;
height: 22px;
overflow: hidden;
}
.nTab .TabTitle ul{
border:0;
margin:0;
padding:0;
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How can I remove a character from a string using Javascript?
... r in the string.
However, it is always the character at index 4 (so the 5th character).
18 Answers
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How to get a random number in Ruby
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958
Use rand(range)
From Ruby Random Numbers:
If you needed a random integer to simulate a rol...