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Mod in Java produces negative numbers [duplicate]
...tive input, whereas the remainder may give negative results. There's some more information about it in this question.
You can find the positive value by doing this:
int i = (((-1 % 2) + 2) % 2)
or this:
int i = -1 % 2;
if (i<0) i += 2;
(obviously -1 or 2 can be whatever you want the numer...
Ruby on Rails. How do I use the Active Record .build method in a :belongs to relationship?
...:ClassMethods"
collection.build(attributes = {}, …)
Returns one or more new objects of the
collection type that have been
instantiated with attributes and
linked to this object through a
foreign key, but have not yet been
saved. Note: This only works if an
associated object alrea...
Redefine tab as 4 spaces
...ing of a line (i.e. the
only preceding characters are whitespace).
For more details on any of these see :help 'optionname' in vim (e.g. :help 'tabstop')
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Java - Method name collision in interface implementation
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Prevent Caching in ASP.NET MVC for specific actions using an attribute
...d still cache the results, just wouldn't use the cached results. Should be more efficient on the client to disable caching via response headers.
– Josh
Dec 26 '13 at 20:30
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ReactJS - Does render get called any time “setState” is called?
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Cluster analysis in R: determine the optimal number of clusters
...net/advstats/cluster.html & http://www.mattpeeples.net/kmeans.html for more. The location of the elbow in the resulting plot suggests a suitable number of clusters for the kmeans:
mydata <- d
wss <- (nrow(mydata)-1)*sum(apply(mydata,2,var))
for (i in 2:15) wss[i] <- sum(kmeans(mydata...
Iterating Through a Dictionary in Swift
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Could you tell me if this example is more efficient in a 1,000 data loop ? Cause i have a JSON that big, so it take me a 1GB processing at the end. Newer devices wont crash, but in my iphone 5s 16GB crash on half of that.
– Daniel Arantes L...
Hide/Show Column in an HTML Table
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When are you supposed to use escape instead of encodeURI / encodeURIComponent?
...f the language features and behaviours specified in this annex have one or more undesirable characteristics and in the absence of legacy usage would be removed from this specification. ...
... Programmers should not use or assume the existence of these features and behaviours when writing new ECMA...