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How is pattern matching in Scala implemented at the bytecode level?
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case Sum(l,r) // instance of check followed by fetching the two arguments and assigning to two variables l and r but see below about custom extractors
case "hello" // equality check
case _ : Foo // instance of check
case x => // assignment to a fresh variable
case _ => // do nothing, this is...
How do I force detach Screen from another SSH session?
...swered, screen -d -r should do the trick. This is a combination of two commands, as taken from the man page.
screen -d detaches the already-running screen session, and screen -r reattaches the existing session. By running screen -d -r, you force screen to detach it and then resume the session.
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grep a tab in UNIX
... That's very good for GNU UNIX, but what about POSIX Solaris, AIX and HP-UX? Those don't know anything about -P option.
– rook
Aug 5 '13 at 15:17
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Android studio: why are minSdkVersion and targetSdkVersion specified both in AndroidManifest.xml and
I just discovered something weird about Android studio: it has some configuration options in the build.gradle file that override what is specified in the AndroidManifest.xml file.
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Removing “NUL” characters
...swered Oct 12 '13 at 10:06
Aleksandr ShumilovAleksandr Shumilov
1,76022 gold badges1515 silver badges2525 bronze badges
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How can mixed data types (int, float, char, etc) be stored in an array?
...mbiguation page for "discriminated union" - "disjoint union" in set theory and, as @H2CO3 mentioned, "tagged union" in computer science.
– Izkata
Sep 2 '13 at 17:38
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Can't compile project when I'm using Lombok under IntelliJ IDEA
...r enabling, run Build -> Rebuild Project to have annotations recognized and eliminate errors.
For IDEA 2019.2.1, depending on how the project is configured, installing the Project Lombok plugin may not be sufficient. Here is another way to use Project Lombok with IntelliJ IDEA:
Visit https:/...
How does the MapReduce sort algorithm work?
... power of MapReduce is the Terasort benchmark . I'm having trouble understanding the basics of the sorting algorithm used in the MapReduce environment.
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How do I fix “for loop initial declaration used outside C99 mode” GCC error?
I'm trying to solve the 3n+1 problem and I have a for loop that looks like this:
11 Answers
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Django - iterate number in for loop of a template
... (in the below case i) in a loop. Or do I have to store it in the database and then query it in form of days.day_number?
3 ...