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What does Java option -Xmx stand for? [duplicate]
java -Xmx1024m filename
5 Answers
5
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How to sort a dataframe by multiple column(s)
...+b, data=dd),times=1000)
Median time: 1,694
Note that doBy takes a good bit of time to load the package.
library(Deducer)
microbenchmark(sortData(dd,c("z","b"),increasing= c(FALSE,TRUE)),times=1000)
Couldn't make Deducer load. Needs JGR console.
esort <- function(x, sortvar, ...) {
attach...
Python: try statement in a single line
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@Brant, Okay, that situation is a bit different than checking if a variable is set (no variables are declared in Python). The typical style in Python is to prefer raising exceptions to returning errors as values, which many of us actually love. Having to chec...
Bulk insert with SQLAlchemy ORM
... You also need s.commit() to actually save the records (it took me a bit to figure this one out).
– horcle_buzz
Dec 4 '15 at 1:30
3
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How to generate random SHA1 hash to use as ID in node.js?
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This was also a great answer Gabi, and just a tiny bit faster, about 15%. Great job both! I actually like to see a Date() in the salt, it gives a developer easy confidence that this will be unique value in all but the most insane parallel computing situations. I know its sill...
What's the fastest way to delete a large folder in Windows?
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+1 on Cygwin, which does an unlink on the structure, a bit faster than how windows tools does it, not as safe though.
– Tracker1
May 21 '13 at 21:23
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How to enable assembly bind failure logging (Fusion) in .NET
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What does the ! mean? Key or value? What about 64 bits systems?
– Bruno Martinez
Jul 14 '09 at 15:21
48
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What does the “yield” keyword do?
...dy does not run. The function only returns the generator object, this is a bit tricky :-)
Then, your code will continue from where it left off each time for uses the generator.
Now the hard part:
The first time the for calls the generator object created from your function, it will run the code in...
capturing self strongly in this block is likely to lead to a retain cycle
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I ran into this warning recently and wanted to understand it a bit better. After a bit of trial and error, I discovered that it originates from having a method start with either "add" or "save". Objective C treats method names starting with "new", "alloc", etc as returning a retained obj...
How to create a trie in Python
...ly, I'll add that creating a directed acyclic word graph (DAWG) would be a bit more complex, because you have to detect situations in which your current word shares a suffix with another word in the structure. In fact, this can get rather complex, depending on how you want to structure the DAWG! You...