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What does the exclamation mark mean in a Haskell declaration?
...ly Just (5+5), leaving the thunk inside unevaluated. This is important to know, though I think that all the implications of this go rather beyond the scope of this question.
You can annotate function arguments in the same way, if you enable the BangPatterns language extension:
f x !y = x*y
f (1+...
What is an OS kernel ? How does it differ from an operating system? [closed]
... Nice. However your answer is verbatim taken from the "Further reading". Now I know how to get lots of upvotes via copy and paste. LOL. Still helpful nonetheless.
– lacostenycoder
Nov 27 '19 at 22:46
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Good example of livelock?
...
Flippant comments aside, one example which is known to come up is in code which tries to detect and handle deadlock situations. If two threads detect a deadlock, and try to "step aside" for each other, without care they will end up being stuck in a loop always "stepping a...
What is Full Text Search vs LIKE
...Document sets = {d1, d2, d3, d4, ... dn}
Term sets = {t1, t2, t3, .. tn}
Now term-document matrix (which term member of which document) can be represented as:
t1 -> {d1, d5, d9,.. dn}
t2 -> {d11, d50, d2,.. dn}
t3 -> {d23, d67, d34,.. dn}
:
tn -> {d90, d87, d57,.. dn}
When the req...
When should I use h:outputLink instead of h:commandLink?
... cipher POST forms nor JS code. Also, UX will be improved as the pages are now bookmarkable and the URL is not "one behind" anymore.
When necessary, you can do the preprocessing job in the constructor or @PostConstruct of a @RequestScoped or @ViewScoped @ManagedBean which is attached to the destinat...
Changes in import statement python3
...ollowing tree for example:
mypkg
├── base.py
└── derived.py
Now, your derived.py requires something from base.py. In Python 2, you could do it like this (in derived.py):
from base import BaseThing
Python 3 no longer supports that since it's not explicit whether you want the 'relati...
What's the difference between io.sockets.emit and broadcast?
...oadcast.emit('BroadCastExceptMe',{data:"HAVE A NICE DAY"});
Conclusion:- Now it will totally depends our business requirement that which one will be preferable.
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what does the __file__ variable mean/do?
...e file otherwise.
Module __file__ attributes (and related values) should now always contain absolute paths by default, with the sole exception of __main__.__file__ when a script has been executed directly using a relative path. (Contributed by Brett Cannon in issue 18416.)
Example:
Calling module...
Google Authenticator implementation in Python
...s),
Parameters
When it comes to parameters:
secret is a secret value known to server (the above script) and client (Google Authenticator, by providing it as password within application),
intervals_no is the number incremeneted after each generation of the token (this should be probably resolved...
Can you help me understand Moq Callback?
...is to be derived
The .Callback mechanism says "I can't describe it right now, but when a call shaped like this happens, call me back and I'll do what needs to be done". As part of the same fluent call chain, you get to control the result to return (if any) via .Returns". In the QS examples, an exa...