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What is the difference between a 'closure' and a 'lambda'?
...lambda (x) (+ x 2)) 7 )
OK, now it's time to solve the other mystery: what is a closure.
In order to do that, let's talk about symbols (variables) in lambda expressions.
As I said, what the lambda abstraction does is binding a symbol in its subexpression, so that it becomes a substitutible par...
How do I copy folder with files to another folder in Unix/Linux? [closed]
...or your experience. If the source includes the trailing slash it will copy what is in the directory only. If it does not include the trailing slash, it will copy the directory as well and then the contents inside of it. My memory is this behavior varies by command and maybe event by OS a bit. Here'...
Why is a combiner needed for reduce method that converts type in java 8
... an Integer in your case, so passing it 0 is fine.
Another way to achieve what you want :
int length = asList("str1", "str2").stream().mapToInt (s -> s.length())
.reduce(0, (accumulatedInt, len) -> accumulatedInt + len);
Here the type of the stream matches the return type of re...
Split comma-separated strings in a column into separate rows
...pt, of course if you don't modify in place you get a filtered copy of only what you have asked for. In brief data.table approach is to not produce a resulting dataset but to update the dataset, that's the real difference between data.table and dplyr.
– Tensibai
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Should I put the Google Analytics JS in the or at the end of ?
...erreira because it is valuable information also, you might want to measure what % of views was like that
– jangorecki
Nov 15 '18 at 7:12
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How to initialize all members of an array to the same value?
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@CetinSert: What do you mean it doesn't work? It does exactly what this answer says it should do. It doesn't do what the comment in your code says, but that comment is wrong.
– Benjamin Lindley
Apr...
What does it mean to “program to an interface”?
I have seen this mentioned a few times and I am not clear on what it means. When and why would you do this?
32 Answers
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Arduino Sketch upload issue - avrdude: stk500_recv(): programmer is not responding
...nswers around here among good ideas. Let's try to be a bit more real about what's happening and sum up the good stuff to check:
Basically, when that happens, it is a good idea to enable verbose mode for AVRDUDE, to get a better idea of what's happening. To do so, you only need to go in the preferen...
Multiline TextView in Android?
...it is not taking maxLines count. All data are displayed in minLines count. What can I try now I am using custom textview in the xml
– Sagar Devanga
Aug 22 '15 at 11:21
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F# changes to OCaml [closed]
F# is derived from OCaml, but what major items are missing or added? Specifically I'm curious as to whether the resources available for learning OCaml are also useful to someone who wants to learn F#.
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