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How to find and return a duplicate value in array
...rocess huge data set.
Looking for faster solution? Here you go!
def find_one_using_hash_map(array)
map = {}
dup = nil
array.each do |v|
map[v] = (map[v] || 0 ) + 1
if map[v] > 1
dup = v
break
end
end
return dup
end
It's linear, O(n), but now needs to manag...
Understand the “Decorator Pattern” with a real world example
...ty wiki
14 revs, 5 users 88%this. __curious_geek
106
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Why do people write the #!/usr/bin/env python shebang on the first line of a Python script?
...
@Shuzheng _Please read the sentence carefully. It says neither what you or Kaz think it says._
– Sinan Ünür
Nov 21 '19 at 1:58
...
Reading 64bit Registry from a 32bit application
...
you have to use the KEY_WOW64_64KEY param when creating/opening the registry key. But AFAIK that's not possible with the Registry class but only when using the API directly.
This might help to get you started.
...
With arrays, why is it the case that a[5] == 5[a]?
...ould make some situations associative which presently aren't, e.g. 3U+(UINT_MAX-2L) would equal (3U+UINT_MAX)-2. What would be best, though, is for the language to have add new distinct types for promotable integers and "wrapping" algebraic rings, so that adding 2 to a ring16_t which holds 65535 wo...
Send string to stdin
...in)
or you can read as
while read line
do
echo =$line=
done < some_file
or simply
echo something | read param
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Java SE 6 vs. JRE 1.6 vs. JDK 1.6 - What do these mean?
...", you see three version numbers - the java version (on mine, that's "1.6.0_07"), the Java SE Runtime Environment version ("build 1.6.0_07-b06"), and the HotSpot version (on mine, that's "build 10.0-b23, mixed mode"). I suspect the "11.0" you are seeing is the HotSpot version.
Update: HotSpot is (...
How is “int* ptr = int()” value initialization not illegal?
...: In ubuntu 11.04 and our own linux flavor, libio.h contains: #if !defined(__cplusplus) \n #define NULL ((void*)0) \n #else \n #define NULL (0) the current version of gcc in ubuntu is 4.5, in our system is 4.0.
– David Rodríguez - dribeas
Nov 9 '11 at 17:33
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Jackson and generic type reference
...
How to initialize TargetClass ?
– AZ_
Oct 9 '13 at 3:23
Please show me a small example. I am passing ...
Argparse: Way to include default values in '--help'?
...parser = argparse.ArgumentParser(
# ... other options ...
formatter_class=argparse.ArgumentDefaultsHelpFormatter)
To quote the documentation:
The other formatter class available, ArgumentDefaultsHelpFormatter, will add information about the default value of each of the arguments.
Not...