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What is a “Bitmap heap scan” in a query plan?
...ference is that, rather than visiting every disk page, a bitmap index scan ANDs and ORs applicable indexes together, and only visits the disk pages that it needs to.
This is different from an index scan, where the index is visited row by row in order -- meaning a disk page may get visited multiple ...
How to properly handle a gzipped page when using curl?
I wrote a bash script that gets output from a website using curl and does a bunch of string manipulation on the html output. The problem is when I run it against a site that is returning its output gzipped. Going to the site in a browser works fine.
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Bootstrap with jQuery Validation Plugin
...anted to mention to add $(element).removeClass(errorClass); to unhighlight and $(element).addClass(errorClass); to highlight if you want success to not use the bootstrap help-block class
– Jay Rizzi
Nov 21 '13 at 20:33
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What is a Lambda?
...ne provide a good description of what a Lambda is? We have a tag for them and they're on the secrets of C# question, but I have yet to find a good definition and explanation of what they are in the first place.
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How can I check if the current date/time is past a set date/time?
...ed according to these rules.
Note that it is also possible to use time and strtotime functions. See original answer.
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How to query SOLR for empty fields?
I have a large solr index, and I have noticed some fields are not updated correctly (the index is dynamic).
7 Answers
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Convert hyphens to camel case (camelCase)
...pperCase(); });
The regular expression will match the -i in marker-image and capture only the i. This is then uppercased in the callback function and replaced.
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Compare dates in MySQL
...e that is between 2 given dates.
The column from the database is DATETIME, and I want to compare it only to the date format, not the datetime format.
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Is element block level or inline level?
...lements. This means that they flow inline like text, but also have a width and height like block elements.
In CSS, you can set an element to display: inline-block to make it replicate the behaviour of images*.
Images and objects are also known as "replaced" elements, since they do not have content...
Why do Java webapps use .do extension? Where did it come from?
...Ls that will be
processed by the controller servlet --
prefix matching and extension
matching. An appropriate mapping entry
for each approach will be described
below.
Prefix matching means that you want
all URLs that start (after the context
path part) with a particular value to
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