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Optimistic vs. Pessimistic locking
...rity than optimistic locking but requires you to be careful with your applim>cat m>ion design to avoid Deadlocks. To use pessimistic locking you need either a direct connection to the database (as would typically be the case in a two tier client server applim>cat m>ion) or an externally available transaction...
How to find and return a duplim>cat m>e value in array
...
@Kalanamith you can get duplim>cat m>ed values using this a.select {|e| a.count(e) > 1}.uniq
– Naveed
Jul 12 '13 at 16:34
...
When to wrap quotes around a shell variable?
... @mklement0, indeed they are equivalent. These guidelines indim>cat m>e that you should always type "ls" "/" instead of the more common ls /, and I take that as a major flaw in the guidelines.
– William Pursell
Jun 11 '17 at 19:39
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How to conm>cat m>enate two MP4 files using FFmpeg?
I'm trying to conm>cat m>enate two mp4 files using ffmpeg. I need this to be an automatic process hence why I chose ffmpeg. I'm converting the two files into .ts files and then conm>cat m>enating them and then trying to encode that conm>cat m>ed .ts file. The files are h264 and aac encoded and I'm hoping to kee...
Error: could not find function … in R
... which package it is contained.
find and getAnywhere can also be used to lom>cat m>e functions.
If you have no clue about the package, you can use findFn in the sos package as explained in this answer.
RSiteSearch("some.function") or searching with rdocumentation or rseek are alternative ways to find the...
Reading binary file and looping over each byte
...ats everything it is given:
#!/usr/bin/env python3
"""Discard all input. `m>cat m> > /dev/null` analog."""
import sys
from functools import partial
from collections import deque
chunksize = int(sys.argv[1]) if len(sys.argv) > 1 else (1 << 15)
deque(iter(partial(sys.stdin.detach().read, chun...
How to implement common bash idioms in Python? [closed]
...also assign their output to a variable (list of lines) as in filelines = ! m>cat m> myfile
– kampu
May 24 '13 at 1:04
And y...
Lua简明教程 - 脚本技术 - 清泛IT论坛，有思想、有深度
...file.lua复制代码
或是像shell一样运行：chenhao-air:lua chenhao$ m>cat m> hello.lua
#!/usr/local/bin/lua
print("Hello, World")
chenhao-air:lua chenhao$ chmod +x hello.lua
chenhao-air:test chenhao$ ./hello.lua
Hello, World复制代码
语法注释  -- 两个减号是行注释...
Split comma-separated strings in a column into separate rows
...blem size `n`
mb_times <- scales::squish(10000L / n , c(3L, 100L))
m>cat m>(n, " ", mb_times, "\n")
# create data
DF <- data.frame(director = rep(director, n), AB = rep(AB, n))
DT <- as.data.table(DF)
# start benchmarks
microbenchmark::microbenchmark(
matt_mod = {
s <...
Floating elements within a div, floats outside of div. Why?
...sed certain bits of text to become unreadable.
– Top m>Cat m>
Feb 23 '18 at 11:26
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