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What does map(&:name) mean in Ruby?
... Symbol#to_proc is implemented in C, not in Ruby, but that's what it'd look like in Ruby.
– Andrew Grimm
Jul 4 '11 at 2:46
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Asynchronous Process inside a javascript for loop [duplicate]
... will create a unique value of i for each invocation of the loop (which is what you want).
Serializing with promises and async/await
If your async function returns a promise, and you want to serialize your async operations to run one after another instead of in parallel and you're running in a mod...
What are all the common ways to read a file in Ruby?
What are all the common ways to read a file in Ruby?
10 Answers
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Android: What's the difference between Activity.runOnUiThread and View.post?
What's the difference between Activity.runOnUiThread and View.post , could someone, please, explain?
4 Answers
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Unzip All Files In A Directory
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What will happen with duplicate files? I guess it will just override?
– kerner1000
May 23 '18 at 18:29
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How do I push a new local branch to a remote Git repository and track it too?
...anch you're pushing, and push.default is set to upstream, this will not do what you think it will do. It will try to push over the existing tracking branch. Use: git push -u origin mynewfeature:mynewfeature or do git branch --unset-upstream first.
– void.pointer
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MYSQL OR vs IN performance
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What indexes were used in these tests?
– eggyal
Jan 1 '13 at 13:26
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Aren't Python strings immutable? Then why does a + “ ” + b work?
...ly mutate the string "Dog". Strings are immutable, variables can point at whatever they want.
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MySQL vs MongoDB 1000 reads
... aren't clustered indexes, so the same 20+ data lookups once we figure out what the appropriate child rows are.
So the total for mysql, even assuming that all indexes are in memory (which is harder since there are 20 times more of them) is about 20 range lookups.
These range lookups are likely co...
Why do we need private subnet in VPC?
...e differentiation between a public and private subnet in VPC is defined by what that subnet's default route is, in the VPC routing tables.
This configuration, in turn, dictates the validity of using, or not using, public IP addresses on instances on that particular subnet.
Each subnet has exact...