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PHP Pass variable to next page
...
HTML / HTTP is stateless, in other words, what you did / saw on the previous page, is completely unconnected with the current page. Except if you use something like sessions, cookies or GET / POST variables. Sessions and cookies are...
Why does typeof NaN return 'number'?
...t a peculiarity of javascript but common computer science principle.
From http://en.wikipedia.org/wiki/NaN:
There are three kinds of operation
which return NaN:
Operations with a NaN as at least one operand
Indeterminate forms
The divisions 0/0, ∞/∞, ∞/−∞, −∞...
Render HTML to an image
...
tempImg.src = 'data:image/svg+xml,' + encodeURIComponent('<svg xmlns="http://www.w3.org/2000/svg" width="100" height="100"><foreignObject width="100%" height="100%"><div xmlns="http://www.w3.org/1999/xhtml"><style>em{color:red;}</style><em>I</em> lick <...
URL rewriting with PHP
...n
break;
case 'more':
...
default:
header('HTTP/1.1 404 Not Found');
Show404Error();
}
This is how big sites and CMS-systems do it, because it allows far more flexibility in parsing URLs, config and database dependent URLs etc. For sporadic usage the hardcod...
Error in finding last used cell in Excel with VBA
...aving
(“The last cell is not reset until you save the worksheet”, from
http://msdn.microsoft.com/en-us/library/aa139976%28v=office.10%29.aspx.
It is an old reference, but in this respect valid).
For criterion 3, I do not know any built-in method.
Criterion 2 does not account for Conditional For...
How to prevent logback from outputting its own status at the start of every log when using a layout
...file, logback will automatically print status data on the console.
Follow http://logback.qos.ch/codes.html#layoutInsteadOfEncoder i.e.
the link mentioned by logback in its warning message. Once you follow the steps mentioned therein, that is, if you replace <layout> element with <encoder&...
How can I push a specific commit to a remote, and not previous commits?
...aster
to push a single commit to my remote master branch.
References:
http://blog.dennisrobinson.name/push-only-one-commit-with-git/
http://blog.dennisrobinson.name/reorder-commits-with-git/
See also:
git: Duplicate Commits After Local Rebase Followed by Pull
git: Pushing Single Commits, Re...
Greedy vs. Reluctant vs. Possessive Quantifiers
...
http://swtch.com/~rsc/regexp/regexp1.html
I'm not sure that's the best explanation on the internet, but it's reasonably well written and appropriately detailed, and I keep coming back to it. You might want to check it out.
...
Simple explanation of MapReduce?
...y easy, quick and "for dummies" introduction to MapReduce is available at: http://www.marcolotz.com/?p=67
Posting some of it's content:
First of all, why was MapReduce originally created?
Basically Google needed a solution for making large computation jobs easily parallelizable, allowing data to be ...
Explain how finding cycle start node in cycle linked list work?
...
Let me try to clarify the cycle detection algorithm that is provided at http://en.wikipedia.org/wiki/Cycle_detection#Tortoise_and_hare in my own words.
How it works
Let's have a tortoise and a hare (name of the pointers) pointing to the beginning of the list with a cycle, as in the diagram a...