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What does the (unary) * operator do in this Ruby code?
...ame, mouse, country, usa. Then the splat is used to make that into a Hash. Now the Ruby people always send you to look at the Splat method, since everything is exposed in Ruby. I have no idea where it is, but once you have that, you'll see that it runs a for through the array and builds the hash.
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What are the git concepts of HEAD, master, origin?
...t of the 'master'. So, which one is the revision that the repo is pointing now?
– OK999
Jun 5 '17 at 21:10
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Find the Smallest Integer Not in a List
...wo linear passes through the list, or just one pass if the list length is known to start with. There is no need to represent the hold the entire list in memory, so the algorithm's asymptotic memory usage is just what is needed to represent the array of booleans; i.e. O(N) bits.
(By contrast, algor...
Difference between and text
There are many legends about them. I want to know the truth. What are the differences between the two following examples?
3...
Copy constructor versus Clone()
...ow clone, thus the interface is semantically broken as your callers won't know whether the call will deep or shallow clone the object.
Instead, you should define your own IDeepCloneable (and IShallowCloneable) interfaces with DeepClone() (and ShallowClone()) methods.
You can define two interfaces,...
dd: How to calculate optimal blocksize? [closed]
...dmittedly, it's been a while since I did that. I use a mebibyte by default now, or just let dd pick the size.)
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Why are static variables considered evil?
...n't be tested, then it IS bad design; because if I can't test it, I can't know that it works. Would you buy a car if the salesperson told you "The design of this model prevents it from being tested, so I don't know if it actually runs"? Testability is so crucial for software (as well as cars), tha...
Script parameters in Bash
...h bar.sh $1
# cat foo2.sh
bash bar.sh "$1"
# bar.sh
echo "1-$1" "2-$2"
Now invoke:
$ bash foo.sh "a b"
1-a 2-b
$ bash foo2.sh "a b"
1-a b 2-
When you invoke foo.sh "a b" then it invokes bar.sh a b (two arguments), and with foo2.sh "a b" it invokes bar.sh "a b" (1 argument). Always have in mi...
How to use the new affix plugin in twitter's bootstrap 2.1.0?
...: $('#nav').offset().top. And it should be inside a ready() block so you know the page layout is complete.
– orrd
Sep 10 '13 at 16:20
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Difference between CLOB and BLOB from DB2 and Oracle Perspective?
...use this is a very late answer. The question was posted nearly 4 years ago now.
– Moira
Mar 5 '18 at 10:44
source woul...