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Best way to make Java's modulus behave like it should with negative numbers?

...the negative values of a, since (a % b) is a negative value between -b and 0, (a % b + b) is necessarily lower than b and positive. The last modulo is there in case a was positive to begin with, since if a is positive (a % b + b) would become larger than b. Therefore, (a % b + b) % b turns it into s...
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How to include “zero” / “0” results in COUNT aggregate?

... 102 You want an outer join for this (and you need to use person as the "driving" table) SELECT per...
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What does ** (double star/asterisk) and * (star/asterisk) do for parameters?

...s the other way around: def foo(a, b, c): print(a, b, c) obj = {'b':10, 'c':'lee'} foo(100,**obj) # 100 10 lee Another usage of the *l idiom is to unpack argument lists when calling a function. def foo(bar, lee): print(bar, lee) l = [1,2] foo(*l) # 1 2 In Python 3 it is possible to...
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How do you convert a byte array to a hexadecimal string, and vice versa?

... 1402 Either: public static string ByteArrayToString(byte[] ba) { StringBuilder hex = new StringBu...
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Redis - Connect to Remote Server

...the Quick Start guide on http://redis.io/topics/quickstart on my Ubuntu 10.10 server. I'm running the service as dameon (so it can be run by init.d) ...
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What does the “|” (single pipe) do in JavaScript?

Why does 0.5 | 0 return zero, but any integer (including negative) returns the input integer? What does the single pipe ("|") do? ...
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Bootstrap 3 modal vertical position center

...: inline-block; vertical-align: middle; content: " "; height: 100%; } } .modal-dialog { display: inline-block; text-align: left; vertical-align: middle; } And adjust a little bit .fade class to make sure it appears out of the top border of window, instead of center ...
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How to change line width in ggplot?

... theme(axis.text.x = element_text( colour = 'black', angle = 90, size = 13, hjust = 0.5, vjust = 0.5),axis.title.x=element_blank()) + ylab("FSI (%Change)") + theme(axis.text.y = element_text(colour = 'black', size = 12), axis.title.y = element_text(size = 12...
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Run command on the Ansible host

...ou want to run an entire play on the Ansible host, then specify hosts: 127.0.0.1 and connection:local in the play, for example: - name: a play that runs entirely on the ansible host hosts: 127.0.0.1 connection: local tasks: - name: check out a git repository git: repo=git://foosball.exa...
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How to get the first element of an array?

... like this alert(ary[0]) share | improve this answer | follow | ...