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How to easily map c++ enums to strings
...ly. (No point in copying your string literals to std::strings in the map)
For extra syntactic sugar, here's how to write a map_init class. The goal is to allow
std::map<MyEnum, const char*> MyMap;
map_init(MyMap)
(eValue1, "A")
(eValue2, "B")
(eValue3, "C")
;
The function templ...
搭建高可用mongodb集群（一）——配置mongodb - 大数据 & AI - 清泛网 - 专...
...！
[initandlisten] db version v2.4.6
……..
[initandlisten] waiting for connections on port 27017
[websvr] admin web console waiting for connections on port 28017
mongodb默认自带提供了web访问接口，通过 IP + 端口的形式可以访问。
http://192.168.0.1:28017/
二、主...
Use find command but exclude files in two directories
...to find that you only want files in the results
-name "*_peaks.bed" - Look for files with the name ending in _peaks.bed
! -path "./tmp/*" - Exclude all results whose path starts with ./tmp/
! -path "./scripts/*" - Also exclude all results whose path starts with ./scripts/
Testing the Solution:
$ ...
解决WaitForSingleObject阻塞UI线程的问题 - C/C++ - 清泛网 - 专注C/C++及内核技术
解决WaitForSingleObject阻塞UI线程的问题WaitForSingleObjec 等待线程结束时会阻塞UI线程，导致界面不响应鼠标操作。解决原理：等待过程中对消息队列中消息进行转发处理。代码如下...WaitForSingleObjec 等待线程结束时会阻塞UI线程，导致...
How to install Java SDK on CentOS?
...eturn a list of all packages directly related to Java. They will be in the format of java-<version>.
$ yum search java | grep 'java-'
If there are no available packages, then you may need to download a new repository to search through. I suggest taking a look at Dag Wieers' repo. After down...
How to programmatically show next view in ViewPager?
...
Unfortunately I do get different behavior, when the user swipes manually and when I jump using setCurrentItem. The order of calls is reversed. When I swipe, it first calls OnPageChangeListener#onPageSelected and then it calls s...
Difference between RegisterStartupScript and RegisterClientScriptBlock?
...sterClientScriptBlock is that RegisterStartupScript puts the javascript before the closing </form> tag of the page and RegisterClientScriptBlock puts it right after the starting <form> tag of the page?
...
Proper use of beginBackgroundTaskWithExpirationHandler
... UIBackgroundTaskInvalid;
}
I have a UIBackgroundTaskIdentifier property for each background task
Equivalent code in Swift
func doUpdate () {
dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0), {
let taskID = beginBackgroundUpdateTask()
var resp...
Redirecting stdout to “nothing” in python
...
Cross-platform:
import os
import sys
f = open(os.devnull, 'w')
sys.stdout = f
On Windows:
f = open('nul', 'w')
sys.stdout = f
On Linux:
f = open('/dev/null', 'w')
sys.stdout = f
...
Change all files and folders permissions of a directory to 644/755
...
One approach could be using find:
for directories
find /desired_location -type d -print0 | xargs -0 chmod 0755
for files
find /desired_location -type f -print0 | xargs -0 chmod 0644
...