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SSL Error When installing rubygems, Unable to pull data from 'https://rubygems.org/
...ing to do the Michael Hartl tutorial. When I attempt to install rails 3.2.14 in my gemset, I get the following issue:
24 A...
How to define a two-dimensional array?
...
1039
You're technically trying to index an uninitialized array. You have to first initialize the o...
Stack smashing detected
...following snippet:
#include <stdio.h>
void func()
{
char array[10];
gets(array);
}
int main(int argc, char **argv)
{
func();
}
The compiler, (in this case gcc) adds protection variables (called canaries) which have known values. An input string of size greater than 10 causes c...
Meaning of -
...
129
To understand the "encoding" attribute, you have to understand the difference between bytes an...
Passing multiple error classes to ruby's rescue clause in a DRY fashion
...
201
You can use an array with the splat operator *.
EXCEPTIONS = [FooException, BarException]
begi...
Configure Log4net to write to multiple files
...s to your logger. For example:
<log4net>
<appender name="File1Appender" type="log4net.Appender.FileAppender">
<file value="log-file-1.txt" />
<appendToFile value="true" />
<layout type="log4net.Layout.PatternLayout">
<conversi...
Print new output on same line [duplicate]
...
187
From help(print):
Help on built-in function print in module builtins:
print(...)
print(v...
C++中智能指针的设计和使用 - C/C++ - 清泛网 - 专注C/C++及内核技术
...。每次创建类的新对象时，初始化指针并将引用计数置为1；当对象作为另一对象的副本而创建时，拷贝构造函数拷贝指针并增加与之相应的引用计数；对一个对象进行赋值时，赋值操作符减少左操作数所指对象的引用计数（如...
How Do I Document Packages in Java?
...
As of 1.5 you can define a package-info.java file and provide a standard javadoc style comment for a package:
com/foo/package-info.java:
/**
* com.foo is a group of bar utils for operating on foo things.
*/
package com.foo;
//...
快速理解 高频对冲套利自动交易（程式化交易） - 更多技术 - 清泛网 - 专注...
...、程序化交易等等的误解与混乱，特开贴探讨。破题篇：1、何谓：高频？T+0制度下，反反复复做同样一件...有感于，目前中国期货界，对于量化投资、程序化交易等等的误解与混乱，特开贴探讨。
破题篇：
1、何谓：高频...