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Breaking loop when “warnings()” appear in R
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152
You can turn warnings into errors with:
options(warn=2)
Unlike warnings, errors will interr...
libcurl的使用总结 - C/C++ - 清泛网 - 专注C/C++及内核技术
...这里，方便给同样刚入门的朋友指引。
一.下载安装
1.到http://curl.haxx.se/download.html上下载最新版本，由于公司的机器安装rpm有依赖关系，所以直接下载了source
2.编译。解压后进入curl的目录，直接执行 make all 就行。
3....
Gradient of n colors ranging from color 1 and color 2
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181
colorRampPalette could be your friend here:
colfunc <- colorRampPalette(c("black", "white"...
std::vector performance regression when enabling C++11
...nteresting performance regression in a small C++ snippet, when I enable C++11:
1 Answer
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Count(*) vs Count(1) - SQL Server
Just wondering if any of you people use Count(1) over Count(*) and if there is a noticeable difference in performance or if this is just a legacy habit that has been brought forward from days gone past?
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Android Layout with ListView and Buttons
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137
I think this is what you are looking for.
<?xml version="1.0" encoding="utf-8"?>
<Re...
Efficiency of Java “Double Brace Initialization”?
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15 Answers
15
Active
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Why does struct alignment depend on whether a field type is primitive or user-defined?
...t = new RefAndTwoInt32Wrappers();
test.text = "adsf";
test.x.x = 0x11111111;
test.y.x = 0x22222222;
Console.ReadLine(); // <=== Breakpoint here
When the breakpoint hits, use Debug + Windows + Memory + Memory 1. Switch to 4-byte integers and put &test in the Address fie...
How is this fibonacci-function memoized?
...is asked for again. If we define some list, xs=[0..] and later ask for its 100th element, xs!!99, the 100th slot in the list gets "fleshed out", holding the number 99 now, ready for next access.
That is what that trick, "going-through-a-list", is exploiting. In normal doubly-recursve Fibonacci def...
How to split csv whose columns may contain ,
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184
Use the Microsoft.VisualBasic.FileIO.TextFieldParser class. This will handle parsing a delimit...