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What does “not run” mean in R help pages?

...urpose of illustration, it’s often useful to include code that causes an error. \dontrun{} allows you to include code in the example that is never used. There are two other special commands. \dontshow{} is run, but not shown in the help page: this can be useful for informal tests. \donttest{} is r...
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ElasticSearch - Return Unique Values

... "size" : 500 } } }} But if you ran into following error: "error": { "root_cause": [ { "type": "illegal_argument_exception", "reason": "Fielddata is disabled on text fields by default. Set fielddata=true on [fastest_method]...
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What's the reason I can't create generic array types in Java?

...; Object[] oa = bsa; oa[0] = new Box<Integer>(3); // error not caught by array store check String s = bsa[0].x; // BOOM! } } We had proposed to resolve this problem using statically safe arrays (aka Variance) bute that was rejected for Tiger. -- gaf...
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How to run SQL script in MySQL?

... for windows, using '/' instead of '\' worked correctly for me. I got errors when I originally used '/'. This is what worked for me...source C:/Users/macombers/Downloads/midcoast_db.sql; – Zack Macomber Oct 3 '14 at 15:09 ...
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Get child node index

... Beware of error in IE! Internet Explorer 6, 7 and 8 supported it, but erroneously includes Comment nodes. Source" developer.mozilla.org/en-US/docs/Web/API/ParentNode/… – Luckylooke May 4 '17 at ...
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Reflection generic get field value

...not really clear to me what you're trying to achieve, I spotted an obvious error in your code: Field.get() expects the object which contains the field as argument, not some (possible) value of that field. So you should have field.get(object). Since you appear to be looking for the field value, you ...
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?: operator (the 'Elvis operator') in PHP

...the variable in the parenthesis exists though, or you're going to raise an error. PHP will not just assume it having a value of null or anything. Just sayin' – DanMan Aug 13 '15 at 11:10 ...
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How do I make CMake output into a 'bin' dir?

... English is not my native language; please excuse typing errors. use this line config : set(EXECUTABLE_OUTPUT_PATH ${PROJECT_SOURCE_DIR}/build/) place your any CMakeLists.txt project. this ${PROJECT_SOURCE_DIR} is your current source directory where project place . and if wand...
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Why do some claim that Java's implementation of generics is bad?

... Sorry, why is the last line a compile error? I'm messing around with it in Eclipse & can't get it to fail there - if I add enough stuff for the rest of it to compile. – oconnor0 Feb 4 '10 at 21:44 ...
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What does !! mean in ruby?

...pying from Matt Van Horn's answer with slight modifications: 1 ^ true TypeError: can't convert true into Integer !!1 ^ !!true => false I used it to ensure two variables were either both nil, or both not nil. raise "Inconsistency" if !!a ^ !!b ...