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What are “Groovy” and “Grails” and what kinds of applications are built using them?
... @Pascal Thivent - I might end up rewriting someone else's program from scratch, and if it weren't for your point about not recommending using Grails with an existing data model, Grails would be the clear winner for the framework to use. I haven't seen the program's DB architecture yet, but ...
Bash ignoring error for a particular command
...
More concisely:
! particular_script
From the POSIX specification regarding set -e (emphasis mine):
When this option is on, if a simple command fails for any of the reasons listed in Consequences of Shell Errors or returns an exit status value >0, and is ...
In Matlab, when is it optimal to use bsxfun?
...);
tic;
idx = bsxfun(@plus, [0:2]', 1:numel(a)-2);
toc
% equivalent code from im2col function in MATLAB
tic;
idx0 = repmat([0:2]', 1, numel(a)-2);
idx1 = repmat(1:numel(a)-2, 3, 1);
idx2 = idx0+idx1;
toc;
isequal(idx, idx2)
Elapsed time is 0.297987 seconds.
Elapsed time is 0.501047 seconds.
ans...
Find index of last occurrence of a substring in a string
...e. Else you may search for minutes where the unexpected value -1 is coming from within your code...
Example: Search of last newline character
>>> txt = '''first line
... second line
... third line'''
>>> txt.rfind('\n')
22
>>> txt.rindex('\n')
22
...
Clojure differences between Ref, Var, Agent, Atom, with examples
...o Identities needs to change together, the classic example is moving money from one bank account to another, it needs to either move completely or not at all.
Uncoordinated access is used when only one Identity needs to update, this is a very common case.
Synchronous access is used when the cal...
Double Negation in C++
...actually a very useful idiom in some contexts. Take these macros (example from the Linux kernel). For GCC, they're implemented as follows:
#define likely(cond) (__builtin_expect(!!(cond), 1))
#define unlikely(cond) (__builtin_expect(!!(cond), 0))
Why do they have to do this? GCC's __builtin_...
Disable LESS-CSS Overwriting calc() [duplicate]
...
Apart from using an escaped value as described in my other answer, it is also possible to fix this issue by enabling the Strict Math setting.
With strict math on, only maths that are inside unnecessary parentheses will be processe...
Differences between lodash and underscore [closed]
... } );
// → [{ 'name': 'barney', 'age': 36, 'blocked': false }]
(taken from lodash docs)
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Getting the last argument passed to a shell script
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@mcoolive: it even works in the unix v7 bourne shell from 1979. you can't get more portable if it runs on both v7 sh and POSIX sh :)
– Dominik R
Nov 22 '19 at 10:41
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javascript find and remove object in array based on key value
...ind an object in an array, where ID = var, and if found, remove the object from the array and return the new array of objects.
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