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腾讯Tencent开源框架介绍（持续更新） - 开源 & Github - 清泛网 - 专注C/C++及内核技术
...下：
单线程下的生产者、消费者模式（自带的demo）
#include <unistd.h>
#include <stdio.h>
#include <stdlib.h>
#include <queue>
#include "co_routine.h"
using namespace std;
/**
* 本实例是对条件变量的展示，其作用类似于pthread_cond_wait
*/
struct stTa...
How to show SQL queries run in the Rails console?
...here is the .explain method in Rails 4.
(.to_sql works too, but won't show includes)
Category.includes(:products).explain
=> EXPLAIN for: SELECT "categories".* FROM "categories" 0|0|0|SCAN TABLE categories
EXPLAIN for: SELECT "categories_products".* FROM "categories_products" WHERE "categories_...
java.net.URLEncoder.encode(String) is deprecated, what should I use instead?
...er responses, instead of using "UTF-8" you can use:
HTTP.UTF_8
which is included since Java 4 as part of the org.apache.http.protocol library, which is included also since Android API 1.
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How to get the absolute coordinates of a view
... in v2.1 didn't work any better. Both methods gave me 0s for everything. I included a code snippet above.
– Steve Haley
Feb 9 '10 at 12:23
77
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Suppress warning messages using mysql from within Terminal, but password written in bash script
... considered extremely insecure and should not be used. Some versions of ps include an option to display the environment of running processes. On some systems, if you set MYSQL_PWD, your password is exposed to any other user who runs ps. Even on systems without such a version of ps, it is unwise to a...
NGinx Default public www location?
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If your configuration does not include a root /some/absolute/path; statement, or it includes one that uses a relative path like root some/relative/path;, then the resulting path depends on compile-time options.
Probably the only case that would allow you ...
Why are dates calculated from January 1st, 1970?
...0 if stored as a 32-bit integer.
MillisecondsUsed by older Java libraries, including the bundled java.util.Date class and the Joda-Time library.
MicrosecondsUsed by databases such as Postgres.
NanosecondsUsed by the new java.time package in Java 8.
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Operator overloading in Java
...your objections. I don't know the details of why the Java designers didn't include various features, but I suspect there's a mixture of resource pressure and a desire to keep the language small and relatively simple.
– Jon Skeet
May 15 '13 at 8:47
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CMake使用教程 - C/C++ - 清泛网 - 专注C/C++及内核技术
...p2
把子目录编译为库，并且链接到最终的可执行文件。
include_directories ("${PROJECT_SOURCE_DIR}/MathFunctions")
add_subdirectory (MathFunctions) # 使得子目录MathFunctions也能被编译
# add the executable
add_executable (Tutorial tutorial.cxx)
target_link_librar...
import .css file into .less file
...ib.css file and treat it as less. If you specify a file is less and do not include an extension, none will be added.
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