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Does using final for variables in Java improve garbage collection?
... You can also use local variables instead of fields when it is possible in order to enhance memory garbage collection and to reduce referential ties.
– sivi
Mar 10 '14 at 9:21
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How to mount a host directory in a Docker container
...gt; tuple. The --mount syntax is more verbose than -v or --volume, but the order of the keys is not significant, and the value of the flag is easier to understand.
The type of the mount, which can be bind, volume, or tmpfs. (We are going to use bind)
The source of the mount. For bind mounts, this is...
How to get a random number between a float range?
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Highly active question. Earn 10 reputation in order to answer this question. The reputation requirement helps protect this question from spam and non-answer activity.
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Angularjs: 'controller as syntax' and $watch
...ontroller to be bound as the same name (in this case "test") everywhere in order for the $watch to work. Would be very easy to introduce subtle bugs.
– jsdw
Jul 11 '14 at 11:03
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How to test equality of Swift enums with associated values
... Better: case (.Name(let a), .Name(let b)) : return a == b etc.
– Martin R
Nov 6 '15 at 22:29
1
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TypeError: ObjectId('') is not JSON serializable
...nitized
This solution will convert ObjectId and others (ie Binary, Code, etc) to a string equivalent such as "$oid."
JSON output would look like this:
{
"_id": {
"$oid": "abc123"
}
}
share
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How to convert floats to human-readable fractions?
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If the the output is to give a human reader a fast impression of the order of the result, it makes no sense return something like "113/211", so the output should limit itself to using one-digit numbers (and maybe 1/10 and 9/10). If so, you can observe that there are only 27 different fraction...
Set type for function parameters?
...read the entire code, and the entire code of the caller and of its caller, etc. Blessing? you certainly must be jesting.
– Toskan
Mar 29 '16 at 20:21
14
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Guards vs. if-then-else vs. cases in Haskell
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This is just a matter of ordering but I think its very readable and has the same structure as guards.
nthElement :: [a] -> Int -> Maybe a
nthElement [] a = Nothing
nthElement (x:xs) a = if a < 1 then Nothing else
if ...
Locking a file in Python
.../ DOS systems.
try:
# Posix based file locking (Linux, Ubuntu, MacOS, etc.)
import fcntl, os
def lock_file(f):
fcntl.lockf(f, fcntl.LOCK_EX)
def unlock_file(f):
fcntl.lockf(f, fcntl.LOCK_UN)
except ModuleNotFoundError:
# Windows file locking
import msvcrt, os...