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When should we use mutex and when should we use semaphore
...://pheatt.emporia.edu/courses/2010/cs557f10/hand07/Mutex%20vs_%20Semaphore.htm:
Mutex:
Is a key to a toilet. One person can have the key - occupy the toilet - at the time. When finished, the person gives (frees) the key to the next person in the queue.
Officially: "Mutexes are typically used to s...
How to get Erlang's release version number from a shell?
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erl -eval 'erlang:display(erlang:system_info(otp_release)), halt().' -noshell
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File input 'accept' attribute - is it useful?
Implementing a file upload under html is fairly simple, but I just noticed that there is an 'accept' attribute that can be added to the <input type="file" ...> tag.
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Why am I getting a “401 Unauthorized” error in Maven?
...entCount = 1
[DEBUG] (f) uniqueVersion = true
[DEBUG] (f) updateReleaseInfo = false
[DEBUG] (f) url = https://nexus.url.blah.com/...
[DEBUG] (f) version = 13.1
[DEBUG] -- end configuration --
In this case it uses the default value "remote-repository", which means that something went wrong....
VC MFC工具栏(CToolBar)控件 - C/C++ - 清泛网 - 专注C/C++及内核技术
...加m_Toolbar为子窗口
m_Rebar.RedrawWindow();//重画窗口
REBARBANDINFO info;
info.cbSize=sizeof(info);
info.fMask=RBBIM_BACKGROUND;
m_Toolbar.ModifyStyle(0,TBSTYLE_TRANSPARENT);//设置工具栏背景色透明
info.hbmBack=LoadBitmap(AfxGetInstanceHandle(),MAKEINTRESOURCE(IDB_TOOLBACK));...
When to use the different log levels
..." the code and trying to find one part of a function specifically.
Debug - Information that is diagnostically helpful to people more than just developers (IT, sysadmins, etc.).
Info - Generally useful information to log (service start/stop, configuration assumptions, etc). Info I want to always have...
How to turn off INFO logging in Spark?
...operties:
# Set everything to be logged to the console
log4j.rootCategory=INFO, console
log4j.appender.console=org.apache.log4j.ConsoleAppender
log4j.appender.console.target=System.err
log4j.appender.console.layout=org.apache.log4j.PatternLayout
log4j.appender.console.layout.ConversionPattern=%d{yy...
When would you use .git/info/exclude instead of .gitignore to exclude files?
I am a bit confused about the pros and cons of using .git/info/exclude and .gitignore to exclude files.
4 Answers
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How to change maven logging level to display only warning and errors?
I want to prevent maven from displaying INFO messages, I want to see only WARNINGS and ERRORS (if any).
10 Answers
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Setting log level of message at runtime in slf4j
...ready implicitly defined by the methods in org.slf4j.Logger: debug, error, info, trace, warn.
– Edward Dale
Apr 12 '10 at 12:45
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