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What does `node --harmony` do?
...all the harmony features (e.g. --harmony_scoping, --harmony_proxies, etc.) From this blog post, it seems harmony enables new ECMAScript 6 features in the language. The reason your file won't run without harmony is because app.js is probably using non-backward compatible features from the new ECMAScr...
Check if the number is integer
...hange the regex to fix this, but this approach is dreadful. (Comment comes from attribution in the installr package.)
– Joshua Ulrich
Mar 5 '13 at 15:30
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MongoDB: update every document on one field
...ongo only affects the first document and to update all documents resulting from the query one needs to use 'Multi' update flag. Sample code follows...
var collection = db.GetCollection("Foo");
var query = Query.GTE("No", 1); // need to construct in such a way that it will give all 20K //docs.
var u...
How do you plot bar charts in gnuplot?
...ctive 'notitle' after the each plot clause in order to surpress the legend from coming up.
– chinnychinchin
Sep 29 '15 at 21:53
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How do I test if a string is empty in Objective-C?
...aced with its contents so if you invoke the macro with something different from a NSString you still get a message from the compiler. Categories would be far better anyway.
– Zmaster
Aug 8 '13 at 12:06
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In C++, what is a “namespace alias”?
...t, shorter name.
As an example, say you wanted to use the numeric vectors from Boost's uBLAS without a using namespace directive. Stating the full namespace every time is cumbersome:
boost::numeric::ublas::vector<double> v;
Instead, you can define an alias for boost::numeric::ublas -- say ...
Shallow copy of a Map in Java
...ot a HashMap), you should use Map#putAll():
Copies all of the mappings from the specified map to this map
(optional operation). The effect of this call is equivalent to that of
calling put(k, v) on this map once for each mapping from key k to
value v in the specified map.
Example:
// Ha...
How do I combine two data frames?
...ta frames. I have a initial data frame, say D . I extract two data frames from it like this:
6 Answers
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Crontab - Run in directory
... a job to run daily in the root crontab. But I would like it to execute it from a particular directory so it can find all the files it needs, since the application has a bunch of relative paths.
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Android - Dynamically Add Views into View
...lly generated layout in your main view. that's the bit you have to fill in from your own code.
– Mark Fisher
Aug 20 '15 at 10:02
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