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What is the difference between “def” and “val” to define a function
...ng var as I need to change it to 3 later
val sq = x*x // evaluates right now
x = 3 // no effect! sq is already evaluated
println(sq)
Surprisingly, this will print 4 and not 9! val (even var) is evaluated immediately and assigned.
Now change val to def.. it will print 9! Def is a function cal...
Redirecting Output from within Batch file
....txt
exit /b
:sub
command1
command2
...
commandN
Edit 2020-04-17
Every now and then you may want to repeatedly write to two or more files. You might also want different messages on the screen. It is still possible to to do this efficiently by redirecting to undefined handles outside a parenthesi...
jQuery event handlers always execute in order they were bound - any way around this? [duplicate]
...ted Answer
jQuery changed the location of where events are stored in 1.8. Now you know why it is such a bad idea to mess around with internal APIs :)
The new internal API to access to events for a DOM object is available through the global jQuery object, and not tied to each instance, and it takes...
How to convert boost path type to string?
...ink, but canonical doesn't seem to be (per your first link, for 1_48 V3). Now in C++17 we have std::filesystem of course
– zdim
Oct 5 '17 at 22:35
...
What is the reason for having '//' in Python? [duplicate]
...e, even though both operands are floats, // still floors -- so you always know securely what it's gonna do.
Single / may or may not floor depending on Python release, future imports, and even flags on which Python's run, e.g....:
$ python2.6 -Qold -c 'print 2/3'
0
$ python2.6 -Qnew -c 'print 2/3'
...
Differences between socket.io and websockets
... @moka A month ago I would have agreed with you. Socket.io 1.0 is out now and is getting updates.
– Timothy Strimple
Aug 11 '14 at 18:50
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ERROR 2002 (HY000): Can't connect to local MySQL server through socket '/tmp/mysql.sock'
... Thanks a million. I've been cracking my head for more than 5 hours now. Seen multiple answers on the internet and only this helped.
– Stylishcoder
Jul 16 '18 at 15:01
...
Why use a public method in an internal class?
...type. So a public member of an internal class is effectively internal.
So now, given an internal class, should its members that you wish to access in the assembly be marked as public or internal?
My opinion is: mark such members as public.
I use "public" to mean "this member is not an implementat...
How to reload a clojure file in REPL
...ctions defined in a Clojure file without having to restart the REPL. Right now, in order to use the updated file I have to:
...
What do ellipsis […] mean in a list?
... p which contains p ... and so on. The [...] notation is a way to let you know this, and to inform that it can't be represented! Take a look at @6502's answer to see a nice picture showing what's happening.
Now, regarding the three new items after your edit:
This answer seems to cover it
Ignacio'...