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Null vs. False vs. 0 in PHP
...or a data value that doesn't exist in the database or is unknown. See dev.mysql.com/doc/refman/5.0/en/working-with-null.html or en.wikipedia.org/wiki/Null_%28SQL%29.
– Eli
Dec 5 '12 at 3:39
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What is the fastest/most efficient way to find the highest set bit (msb) in an integer in C?
...ding a kind of integer log. There are bit-twiddling tricks, but I've made my own tool for this. The goal of course is for speed.
My realization is that the CPU has an automatic bit-detector already, used for integer to float conversion! So use that.
double ff=(double)(v|1);
return ((*(1+(uint32_...
Find a Git branch containing changes to a given file
...an appropriate solution. I don't have enough credits to comment, so here's my little contribution.
Seth Robertson's 1st solution kinda worked for me, but only gave me local branches, among which where many false positives, probably because of merges from the stable branch.
Adam Dymitruk's 2nd solu...
How do I install a custom font on an HTML site
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Does not work for me, my font is in the same folder as my php page.
– Black
Jan 25 '16 at 12:03
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Is a successor for TeX/LaTeX in sight? [closed]
...t of macros for TeX that can be used instead of LaTeX.
I haven't used it myself but the syntax in the example documents looks simpler than LaTeX in a number of cases.
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Insert, on duplicate update in PostgreSQL?
...rom an answer on Stack Overflow how to perform multiple updates at once in MySQL using the following syntax:
16 Answers
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What does new self(); mean in PHP?
...in which it is written.
So, if your getInstance method is in a class name MyClass, the following line :
self::$_instance = new self();
Will do the same as :
self::$_instance = new MyClass();
Edit : a couple more informations, after the comments.
If you have two classes that extend each o...
Types in MySQL: BigInt(20) vs Int(20)
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See http://dev.mysql.com/doc/refman/8.0/en/numeric-types.html
INT is a four-byte signed integer.
BIGINT is an eight-byte signed integer.
They each accept no more and no fewer values than can be stored in their respective number of by...
Difference between git pull and git pull --rebase
...arted using git sometime back and do not fully understand the intricacies. My basic question here is to find out the difference between a git pull and git pull --rebase , since adding the --rebase option does not seem to do something very different : just does a pull.
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Is the order of iterating through std::map known (and guaranteed by the standard)?
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This doesn't have anything to do with my question, sorry :) I know which one are ordered, and which - not. And I'm asking for the order when I'm iterating through the elements.
– Kiril Kirov
Oct 4 '11 at 15:32
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