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What's the difference between `=` and `
I'm using R 2.8.1 and it is possible to use both = and <- as variable assignment operators. What's the difference between them? Which one should I use?
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Ruby array to string conversion
I have a ruby array like ['12','34','35','231'] .
12 Answers
12
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What do column flags mean in MySQL Workbench?
...on-negative numbers only. so if the range is -500 to 500, instead its 0 - 1000, the range is the same but it starts at 0)
UQ - Create/remove Unique Key
ZF - Zero-Filled (if the length is 5 like INT(5) then every field is filled with 0’s to the 5th digit. 12 = 00012, 400 = 00400, etc. )
AI ...
How to check identical array in most efficient way? [duplicate]
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151
So, what's wrong with checking each element iteratively?
function arraysEqual(arr1, arr2) {
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In Ruby, how do I skip a loop in a .each loop, similar to 'continue' [duplicate]
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Use next:
(1..10).each do |a|
next if a.even?
puts a
end
prints:
1
3
5
7
9
For additional coolness check out also redo and retry.
Works also for friends like times, upto, downto, each_with_index, select, map and other itera...
Run automatically program on startup under linux ubuntu [closed]
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1 Answer
1
Active
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How to upgrade R in ubuntu? [closed]
I have R 2.12.1 installed in my ubuntu, and I'd like upgrade to lastest version 2.15, how can achieve that ? Thanks
1 Answ...
Loop through list with both content and index [duplicate]
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answered Jul 13 '12 at 17:55
BrenBarnBrenBarn
197k2727 gold badges348348 silver badges337337 bronze badges
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Django Reverse with arguments '()' and keyword arguments '{}' not found
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answered Nov 2 '12 at 20:16
miki725miki725
22.5k1515 gold badges8787 silver badges111111 bronze badges
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Delete a dictionary item if the key exists [duplicate]
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601
You can use dict.pop:
mydict.pop("key", None)
Note that if the second argument, i.e. None i...