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Why does GCC generate 15-20% faster code if I optimize for size instead of speed?
... will leave it up to him to figure it out. I don't have such a processor.
Now, on my machine I don't get this 256 byte boundary effect. Only the function and the loop alignment kicks in on my machine. If I pass g++ -O2 -falign-functions=16 -falign-loops=16 then everything is back to normal: I alway...
Understanding FFT output
... as sqrt (real * real + imag * imag). This number will always be positive. Now all you have to search is for the maximum value (ignore the first entry in your array. That is your DC offset and carries no frequency dependent information).
You get 32 real and 32 imaginary outputs because you are usin...
How do I commit case-sensitive only filename changes in Git?
...
Don't forget to give the full file path. Obvious, I know, but got me for a while
– rickrizzo
Aug 15 '17 at 16:03
9
...
What's a quick way to comment/uncomment lines in Vim?
...VISUAL BLOCK mode.
Then using the arrow key and select until the last line
Now press ShiftI, which will put the editor in INSERT mode and then press #. This will add a hash to the first line.
Then press Esc (give it a second), and it will insert a # character on all other selected lines.
For the...
100% Min Height CSS layout
...
Since it is no longer in the normal flow, padding-bottom of #content
now provides the space for the absolute #footer. This padding is
included in the scrolled height by default, so that the footer will
never overlap the above content.
Scale the text size a bit or resize your browser w...
Two-way encryption: I need to store passwords that can be retrieved
...ime to show you different instances will still properly decrypt the data.
Now, how does it work/why use it over another solution:
Keys
The keys are not directly used. Instead, the key is stretched by a standard PBKDF2 derivation.
The key used for encryption is unique for every encrypted block ...
How to add leading zeros for for-loop in shell? [duplicate]
...ates that this feature got introduced with bash-4.0-alpha: Brace expansion now allows zero-padding of expanded numeric values and will add the proper number of zeroes to make sure all values contain he same number of digits.).
– Adrian Frühwirth
Feb 13 '15 at ...
What is the best way to compute trending topics or tags?
...
For anyone who would like it, I now have SQL queries to do this.
– thouliha
Feb 8 '16 at 13:42
1
...
How to implement “confirmation” dialog in Jquery UI dialog?
... 50);
}
$(this).dialog('destroy');
}
}
});
}
Now to use this in your code, simply write following
myConfirm('Do you want to delete this record ?', function () {
alert('You clicked OK');
}, function () {
alert('You clicked Cancel');
},
'Confirm Delete'
);
...
Which MySQL data type to use for storing boolean values
...
This is very clever! I used to write clever code, now I avoid it like the plague. I now want my code to have crystal clear intent, not just correct behaviour. My advice? Only do this if you want to confuse anyone who has to support the code/database. For instance, in PHP bot...