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Why isn't Python very good for functional programming? [closed]
...ne of the prettiest languages I know. When I write functional Python, it becomes as ugly and unpleasant as your average language that doesn't have a BDFL.
Which is not to say that it's bad, just that you have to work harder than you would if you switched to a language that promotes functional progr...
What are the best use cases for Akka framework [closed]
... scala by the way)
One of the big advantages is the ease at which you can compose a system out of actors and messages with almost no boilerplating, it scales extremely well without all the complexities of hand-rolled threading and you get asynchronous message passing between objects almost for free...
How to prevent buttons from submitting forms
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How does Facebook disable the browser's integrated Developer Tools?
...ctual code is pretty similar to @joeldixon66's link; ours is a little more complicated for no good reason.
Chrome wraps all console code in
with ((console && console._commandLineAPI) || {}) {
<code goes here>
}
... so the site redefines console._commandLineAPI to throw:
Object.d...
Does Java have something like C#'s ref and out keywords?
...t's always clear when you're passing something by reference. yoda.arachsys.com/csharp/parameters.html
– Mark Byers
May 10 '10 at 22:03
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Fastest way to replace NAs in a large data.table
...d at NAToUnknown).
EDIT (more elegant solution as requested by Ramnath in comments) :
f_dowle2 = function(DT) {
for (i in names(DT))
DT[is.na(get(i)), (i):=0]
}
system.time(f_dowle2(dt1))
user system elapsed
6.468 0.760 7.250 # faster, too
identical(a_gdata, dt1)
[1] TRUE
I...
Can enums be subclassed to add new elements?
...have a base class called e.g. IntEnum, that looks like this: stackoverflow.com/questions/1681976/enum-with-int-value-in-java/…. Then all my enums could extend it...in this case just benefitting from inheritance and thus I wouldn't have to duplicate this "int-based enum" code frequently. I am new...
Python subprocess.Popen “OSError: [Errno 12] Cannot allocate memory”
...or because security_vm_enough_memory_mm failed you while enforcing the overcommit policy.
Start by checking the vmsize of the process that failed to fork, at the time of the fork attempt, and then compare to the amount of free memory (physical and swap) as it relates to the overcommit policy (plug ...
Alarm 闹钟扩展 · App Inventor 2 中文网
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尽管Android文档强烈建议使用通知（参见 developer.android.com），但在某些情况下，仍然需要在特定时间启动应用程序。使用此扩展，可以在指定时间启动应用程序。如果您想定时生成通知，必须使用扩展 UrsAI2Notifier。
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C# switch statement limitations - why?
... switch statement is not always a constant time branch.
In some cases the compiler will use a CIL switch statement which is indeed a constant time branch using a jump table. However, in sparse cases as pointed out by Ivan Hamilton the compiler may generate something else entirely.
This is actuall...