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What are type lambdas in Scala and what are their benefits?
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@retronym, I got an error when trying (1, 2).map(a => a + 1) in REPL: ` <console>:11: error: value map is not a member of (Int, Int) (1, 2).map(a => a + 1) ^`
– Kevin Meredith
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Remove all occurrences of a value from a list?
...ython 3.x
>>> x = [1,2,3,2,2,2,3,4]
>>> list(filter((2).__ne__, x))
[1, 3, 3, 4]
or
>>> x = [1,2,3,2,2,2,3,4]
>>> list(filter(lambda a: a != 2, x))
[1, 3, 3, 4]
Python 2.x
>>> x = [1,2,3,2,2,2,3,4]
>>> filter(lambda a: a != 2, x)
[1, 3, 3...
Git Bash doesn't see my PATH
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– Vitali Dettling
Dec 13 '18 at 12:05
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How to atomically delete keys matching a pattern using Redis
...ry in your Redis server, you'll run into the "too many elements to unpack" error. In that case, do:
for _,k in ipairs(redis.call('keys', ARGV[1])) do
redis.call('del', k)
end
As Kikito suggested.
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How to convert a std::string to const char* or char*?
...ntrol'
Con
Requires string copy
Maximum liability / susceptibility for errors
Complex
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Automatically capture output of last command into a variable using Bash?
...;2) because the standard output of tee must be redirected back to standard error.
– Hugues
Jan 30 '17 at 6:03
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GPU Emulator for CUDA programming without the hardware [closed]
...ved in a future release.
/usr/include/i386-linux-gnu/bits/byteswap.h(47): error: identifier "__builtin_bswap32" is undefined
/usr/include/i386-linux-gnu/bits/byteswap.h(111): error: identifier "__builtin_bswap64" is undefined
/home/user/Downloads/helloworld.cu(12): error: identifier "cudaDeviceSy...
Move all files except one
... For ZSH user, instead of using shopt (which will give command not found error), add this to your .zshrc: setopt extended_glob then the syntax for glob will also change accordingly. Thus use mv ~/path/to/source^(exception) ~/path/to/target/folder should do
– Alex Xiong
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How do I do base64 encoding on iOS?
...eemed to work great until I started getting some memory corruption related errors and using guard malloc I narrowed it down to this line: *objPointer = '\0'; so beware if you use this in your own apps.
– Mattia
Jul 20 '12 at 18:55
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Python Linked List
...tains a cargo object and a reference to a linked list.
class Node:
def __init__(self, cargo=None, next=None):
self.car = cargo
self.cdr = next
def __str__(self):
return str(self.car)
def display(lst):
if lst:
w("%s " % lst)
display(lst.cdr)
else:
w("nil\n")
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