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Database Design for Tagging
...ke it will suit the situation well. However, I'm not convinced it's a good idea to implement bitmap indexing "manually", like digiguru suggests: It sounds like a complicated situation whenever new tags are added(?) But some DBMSes (including Oracle) offer bitmap indexes which may somehow be of use, ...
Best ways to teach a beginner to program? [closed]
...nd gaze into the Abyss. Start by writing a circular buffer and a stack for string manipulation. Then work your way up.
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edited Mar 28 '12 at 19:16
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Can I do a synchronous request with volley?
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@tasomaniac Updated. This uses the JsonObjectRequest(String url, JSONObject jsonRequest, Listener<JSONObject> listener, ErrorListener errorlistener) constructor. RequestFuture<JSONObject> implements both the Listener<JSONObject> and ErrorListener interfaces, s...
What is meant by “managed” vs “unmanaged” resources in .NET?
...e your code thusly:
using (var connection = new SqlConnection("connection_string_here"))
{
// Code to use connection here
}
As this ensures that .Dispose() is called on the connection object, ensuring that any unmanaged resources are cleaned up.
...
Using sed to mass rename files
... the rest of the filename, which can be referenced by \2.
The replacement string puts it all together using & (the original
filename) and \1\2 which is every part of the filename except the 2nd
character, which was a 0.
This is a pretty cryptic way to do this, IMHO. If for
some reason the ren...
Count with IF condition in MySQL query
...unt()
Try below:
SELECT
ccc_news . * ,
SUM(if(ccc_news_comments.id = 'approved', 1, 0)) AS comments
FROM
ccc_news
LEFT JOIN
ccc_news_comments
ON
ccc_news_comments.news_id = ccc_news.news_id
WHERE
`ccc_news`.`category` = 'news_layer2'
AND `ccc_news`.`sta...
Add line break to 'git commit -m' from the command line
...$'first line\nsecond line'
From the Bash manual:
Words of the form $'string' are treated specially. The word expands to
string, with backslash-escaped characters replaced as specified by the
ANSI C standard.
This includes support for newlines as shown above, plus hex and Unicode codes an...
Generate pdf from HTML in div using Javascript
...s
If you want to ignore certain elements, you have to mark them with an ID, which you can then ignore in a special element handler of jsPDF. Therefore your HTML should look like this:
<!DOCTYPE html>
<html>
<body>
<p id="ignorePDF">don't print this to pdf</p>
...
Calculate relative time in C#
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Seb, If you have Javascript disabled, then the string you originally put between the abbr tags is displayed. Typically, this is just a date or time in any format you wish. Timeago degrades gracefully. It doesn't get much simpler.
– Ryan McGeary
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Runtime vs. Compile time
...ink of it in terms of errors, and when they can be caught.
Compile time:
string my_value = Console.ReadLine();
int i = my_value;
A string value can't be assigned a variable of type int, so the compiler knows for sure at compile time that this code has a problem
Run time:
string my_value = Cons...