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Using R to download zipped data file, extract, and import data
...))
Use download.file() to fetch the file into the temp. file
Use unz() to extract the target file from temp. file
Remove the temp file via unlink()
which in code (thanks for basic example, but this is simpler) looks like
temp <- tempfile()
download.file("http://www.newcl.org/data/zipfiles/a1.z...
How do you convert an entire directory with ffmpeg?
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I'm getting the error i was unexpected at this time.
– Keavon
May 17 '14 at 1:09
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How can I troubleshoot my Perl CGI script?
...unter, nor a tutorial on bug squashing. It
is just the culmination of my experience debugging CGI scripts for twenty (plus!) years. This page seems to have had many different homes, and I seem
to forget it exists, so I'm adding it to the StackOverflow. You
can send any comments or suggestions to m...
std::string to float or double
...ouble temp = ::atof(num.c_str());
Does it for me, it is a valid C++ syntax to convert a string to a double.
You can do it with the stringstream or boost::lexical_cast but those come with a performance penalty.
Ahaha you have a Qt project ...
QString winOpacity("0.6");
double temp = winOpacity...
What is state-of-the-art for text rendering in OpenGL as of version 4.1? [closed]
There are already a number of questions about text rendering in OpenGL, such as:
5 Answers
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What is the correct way to make a custom .NET Exception serializable?
More specifically, when the exception contains custom objects which may or may not themselves be serializable.
7 Answers
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What is a predicate in c#? [duplicate]
...t way of basically testing if something is true of a given T object.
For example suppose I have a class:
class Person {
public string Name { get; set; }
public int Age { get; set; }
}
Now let's say I have a List<Person> people and I want to know if there's anyone named Oscar in the...
Can't connect to local MySQL server through socket '/tmp/mysql.sock
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理解和配置 Linux 下的 OOM Killer - 操作系统(内核) - 清泛网 - 专注C/C++及内核技术
理解和配置 Linux 下的 OOM Killerhow-to-configure-the-linux-oom-killer最近有位 VPS 客户抱怨 MySQL 无缘无故挂掉，还有位客户抱怨 VPS 经常死机，登陆到终端看了一下，都是常见的 Out of memory 问题。这通常是因为某时刻应用程序大量请求 最...
Seeding the random number generator in Javascript
...t, but it's fairly easy to write your own generator, or better yet use an existing one. Check out: this related question.
Also, see David Bau's blog for more information on seeding.
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