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dd: How to calculate optimal blocksize? [closed]
How do you calculate the optimal blocksize when running a dd ? I've researched it a bit and I've not found anything suggesting how this would be accomplished.
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Getting DOM elements by classname
I'm using PHP DOM and I'm trying to get an element within a DOM node that have a given class name. What's the best way to get that sub-element?
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Alternatives to dispatch_get_current_queue() for completion blocks in iOS 6?
I have a method that accepts a block and a completion block. The first block should run in the background, while the completion block should run in whatever queue the method was called.
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Cannot simply use PostgreSQL table name (“relation does not exist”)
I'm trying to run the following PHP script to do a simple database query:
11 Answers
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Relative URLs in WordPress
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<?php wp_make_link_relative( $link ) ?>
Convert full URL paths to relative paths.
Removes the http or https protocols and the domain. Keeps the path '/' at the beginning, so it isn't a true relative link, but f...
When should I use a composite index?
...starts with longitude so that the useful rows are likely to be in the same block. A Stored Routine orchestrates the messy code for doing order by... limit... and for growing the 'square' around the target until you have enough coffee shops (or whatever). It also takes care of the great-circle calc...
HTML5 Canvas vs. SVG vs. div
...vas, but not as much as SVG got improved. Also there is a "new kid" on the block that is available in almost all browsers today and that is WebGL. To use the same words that Simon used above: It beats both Canvas and SVG hands down. This doesn't mean it should be the go-to technology, though, since ...
Indent multiple lines quickly in vi
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Use the > command. To indent five lines, 5>>. To mark a block of lines and indent it, Vjj> to indent three lines (Vim only). To indent a curly-braces block, put your cursor on one of the curly braces and use >% or from anywhere inside block use >iB.
If you’re copying b...
Remove portion of a string after a certain character
... just wondering how I could remove everything after a certain substring in PHP
15 Answers
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What is the difference between display: inline and display: inline-block?
What exactly is the difference between the inline and inline-block values of CSS display ?
5 Answers
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