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Read a file line by line assigning the value to a variable
.../dev/null to your ffmpeg line and it won't be able to, or use an alternate FD for the loop. That "alternate FD" approach looks like while IFS='' read -r line <&3 || [[ -n "$line" ]]; do ...; done 3<"$1".
– Charles Duffy
Dec 14 '16 at 16:11
...
What column type/length should I use for storing a Bcrypt hashed password in a Database?
...
The modular crypt format for bcrypt consists of
$2$, $2a$ or $2y$ identifying the hashing algorithm and format
a two digit value denoting the cost parameter, followed by $
a 53 characters long base-64-encoded value (they use the alphabet ., /, 0–9, A–Z, a–z that is differe...
Finding a branch point with Git?
... merging master onto topic
D: 37ad159 post-branch commit on master
C: 132ee2a first commit on topic branch
B: 6aafd7f second commit on master before branching
A: 4112403 initial commit on master
So, the goal: find B. Here are three ways that I found, after a bit of tinkering:
1. visually, with...
Rollback to an old Git commit in a public repo
...Date: Fri Jul 8 23:42:22 2016 +0300
This is last commit message
commit fd6cb176297acca4dbc69d15d6b7f78a2463482f
Author: author <author@gmail.com>
Date: Fri Jun 24 20:20:24 2016 +0300
This is previous commit message
commit ab0de062136da650ffc27cfb57febac8efb84b8d
Author: author <auth...
Why are Docker container images so large?
...weeks ago /bin/sh -c #(nop) ADD file:cee1a4fcfcd00d18da 372.7 MB
fd241224e9cf 2 weeks ago /bin/sh -c #(nop) MAINTAINER Lokesh Mandvekar 0 B
511136ea3c5a 12 months ago 0 B
...
Unable to open project… cannot be opened because the project file cannot be parsed
....mine
9ADAAC6A15DCEF6A0019ACA8 .... in Resources */,
=======
52FD7F3D15DCEAEF009E9322 ... in Resources */,
>>>>>>> .r269
Now remove those <<<<<<< .mine, ======= and >>>>>>> .r lines so it would look like this
9ADAAC...
Determining complexity for recursive functions (Big O notation)
...) = a + 2 * T(n - 1)
where a is some constant
By induction:
T(n) = a + 2a + 4a + ... + 2^(n-1) * a + T(0) * 2^n
= a * 2^n - a + b * 2^n
= (a + b) * 2^n - a
= O(2 ^ n)
where a, b are some constant.
5.
T(n) = n / 2 + T(n - 5)
where n is some constant
Rewrite n = 5q + r where...
Calculate RSA key fingerprint
...y is password-protected.
Now, as others have said, type
$ ssh-add -l
1024 fd:bc:8a:81:58:8f:2c:78:86:a2:cf:02:40:7d:9d:3c you@yourhost (DSA)
fd:bc:... is the fingerprint you are after. If there are multiple keys, multiple lines will be printed, and the last line contains the fingerprint of the la...
Get the current displaying UIViewController on the screen in AppDelegate.m
...NSConcreteNotification allKeys]: unrecognized selector sent to instance 0x1fd87480 2013-07-05 16:10:36.469 Providence[2961:907] *** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '-[NSConcreteNotification allKeys]: unrecognized selector sent to instance 0x1fd87480'
...
What optimizations can GHC be expected to perform reliably?
...hy are you worrying about it?)
Case expressions
Consider the following:
foo (0:_ ) = "zero"
foo (1:_ ) = "one"
foo (_:xs) = foo xs
foo ( []) = "end"
The first three equations all check whether the list is non-empty (among other things). But checking the same thing thrice is wasteful. Fortunate...