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Does Go have “if x in” construct similar to Python?
...ery inefficient, on average requiring half the items
to be compared each time.
Go provides a sort.Search() method which uses the binary search
algorithm: This requires the comparison of only log2(n) items (where n
is the number of items) each time. To put this in perspective, a
linear s...
How to convert an int array to String with toString method in Java [duplicate]
...blem I needed to solve for an app I'm porting, but might save someone some time.
– clearlight
Sep 24 '15 at 1:48
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Why does the Scala compiler disallow overloaded methods with default arguments?
... why does the compiler disallow code which is neither ambiguous at compile time nor at run time?
7 Answers
...
static linking only some libraries
..., referring to the --static option:
You may use this option multiple
times on the command line: it affects
library searching for -l options which
follow it.
One solution is to put your dynamic dependencies before the --static option on the command line.
Another possibility is to not use...
How does std::forward work? [duplicate]
...y, you need "perfect forwarding", which would result in optimal code every time. If you're given an lvalue, you want your function to treat it as an lvalue and make a copy. If you're given an rvalue, you want your function to treat it as an rvalue and move it.
Normally you would do it by overloadin...
How to iterate over a JavaScript object?
... If I will break loop, it will start from beginning of object next time, that is not right way.
– nkuhta
Jan 17 '13 at 12:43
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Reserved keywords in JavaScript
..., thanks for adding that info. I found that PDF in google, but didn't have time to open and read it all.
– benc
Oct 3 '08 at 17:10
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@import vs #import - iOS 7
...finds in the included file into your code during compilation. This can sometimes cause significant problems. For example, imagine you have two header files: SomeFileA.h and SomeFileB.h; SomeFileA.h includes SomeFileB.h, and SomeFileB.h includes SomeFileA.h. This creates a loop, and can confuse the c...
mongodb: insert if not exists
...psert command.
To turn your pseudocode into a working example:
now = datetime.utcnow()
for document in update:
collection.update_one(
{"_id": document["_id"]},
{
"$setOnInsert": {"insertion_date": now},
"$set": {"last_update_date": now},
},
...
What's the better (cleaner) way to ignore output in PowerShell? [closed]
...sure-Command {$null = $(1..1000)}
TotalMilliseconds : 0.2122
## Control, times vary from 0.21 to 0.24
Measure-Command {$(1..1000)}
TotalMilliseconds : 0.2141
So I would suggest that you use anything but Out-Null due to overhead. The next important thing, to me, would be readability. I kind of...