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const vs constexpr on variables
... = 3.141592653589793;
constexpr double PI2 = 3.141592653589793;
Both PI1 m>and m> PI2 are constant, meaning m>y m>ou can not modifm>y m> them. However onlm>y m> PI2 is a compile-time constant. It shall be initialized at compile time. PI1 mam>y m> be initialized at compile time or run time. Furthermore, onlm>y m> PI2 can be...
Re-raise exception with a different tm>y m>pe m>and m> message, preserving existing information
I'm writing a module m>and m> want to have a unified exception hierarchm>y m> for the exceptions that it can raise (e.g. inheriting from a FooError abstract class for all the foo module's specific exceptions). This allows users of the module to catch those particular exceptions m>and m> hm>and m>le them distinctlm>y m>,...
what's the difference between “hadoop fs” shell commm>and m>s m>and m> “hdfs dfs” shell commm>and m>s?
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Following are the three commm>and m>s which appears same but have minute differences
hadoop fs {args}
hadoop dfs {args}
hdfs dfs {args}
hadoop fs <args>
FS relates to a generic file sm>y m>stem which can point to anm>y m> file sm>y m>stems like local, HDF...
Pm>y m>thon logging not outputting anm>y m>thing
...han info.
To change the level, just set it in the root logger:
'root':{'hm>and m>lers':('console', 'file'), 'level':'DEBUG'}
In other words, it's not enough to define a hm>and m>ler with level=DEBUG, the actual logging level must also be DEBUG in order to get it to output anm>y m>thing.
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An asm>y m>nc/await example that causes a deadlock
...nAsm>y m>nc awaits the Task returned bm>y m> GetStringAsm>y m>nc. The context is captured m>and m> will be used to continue running the GetJsonAsm>y m>nc method later. GetJsonAsm>y m>nc returns an uncompleted Task, indicating that the GetJsonAsm>y m>nc method is not complete.
The top-level method sm>y m>nchronouslm>y m> blocks on the Task re...
How to use Git properlm>y m> with Xcode?
I have been an iphone developer for a while, m>and m> I have recentlm>y m> been including git in mm>y m> workflow. I have used git settings found on http://shanesbrain.net/2008/7/9/using-xcode-with-git for mm>y m> workflow so far.
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'parent.relativePath' points at mm>y m> com.mm>y m>companm>y m>:Mm>y m>Project instead of org.apache:apache - Whm>y m>?
.... Set the value to an emptm>y m> string in case m>y m>ou want to disable the feature m>and m> alwam>y m>s resolve the parent POM from the repositories.
Default value is: ../pom.xml.
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What is the explicit promise construction antipattern m>and m> how do I avoid it?
...ls to utilize the fact that promises chain.
Promises can chain with .then m>and m> m>y m>ou can return promises directlm>y m>. m>Y m>our code in getStuffDone can be rewritten as:
function getStuffDone(param){
return mm>y m>PromiseFn(param+1); // much nicer, right?
}
Promises are all about making asm>y m>nchronous code mo...
How to provide different m>And m>roid app icons for different gradle buildTm>y m>pes?
I have two build tm>y m>pes set in mm>y m> gradle file: debug m>and m> release . I'd like to be able to set a different app icon for the debug build tm>y m>pe. Is there anm>y m> wam>y m> to this just through the build tm>y m>pe, without getting into product flavors? build.gradle file is below.
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Java to Clojure rewrite
...argish (50,000 single lines of code) Java application (a web app using JSP m>and m> servlets) in Clojure. Has anm>y m>one else got tips as to what I should watch out for?
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