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How are software license keys generated?
...to disassemble our released application and produce a working “keygen” from it. This means that our application will not fully test a key for verification. Only some of the key is to be tested. Further, each release of the application should test a different portion of the key, so that a phony k...
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]
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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...
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 ...
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...
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.
...
HTML button to NOT submit form
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Dave Markle is correct. From W3School's website:
Always specify the type attribute for
the button. The default type for
Internet Explorer is "button", while
in other browsers (and in the W3C
specification) it is "submit".
In other word...
Configuration System Failed to Initialize
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Delete old configuration files from c:\Users\username\AppData\Local\appname and c:\Users\username\AppData\Roaming\appname and then try to restart your application.
share
|...
How to determine if an NSDate is today?
...ndarUnitEra | NSCalendarUnitYear | NSCalendarUnitMonth | NSCalendarUnitDay fromDate:aDate];
NSDateComponents *today = [[NSCalendar currentCalendar] components:NSCalendarUnitEra | NSCalendarUnitYear | NSCalendarUnitMonth | NSCalendarUnitDay fromDate:[NSDate date]];
if([today day] == [otherDay day] &a...