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How to find out what type of a Mat object is with Mat::type() in OpenCV
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Here is a handy function you can use to help with identifying your opencv matrices at runtime. I find it useful for debugging, at least.
string type2str(int type) {
string r;
uchar depth = type & CV_MAT_DEPTH_MASK;
uchar cha...
RESTful Services - WSDL Equivalent
I have been reading about REST and SOAP, and understand why implementing REST can be beneficial over using a SOAP protocol. However, I still don't understand why there isn't the "WSDL" equivalent in the REST world. I have seen posts saying there is "no need" for the WSDL or that it would be redund...
Meaning of “[: too many arguments” error from if [] (square brackets)
...t find any one simple straightforward resource spelling out the meaning of and fix for the following BASH shell error, so I'm posting what I found after researching it.
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Simple way to calculate median with MySQL
What's the simplest (and hopefully not too slow) way to calculate the median with MySQL? I've used AVG(x) for finding the mean, but I'm having a hard time finding a simple way of calculating the median. For now, I'm returning all the rows to PHP, doing a sort, and then picking the middle row, but ...
Can PHP PDO Statements accept the table or column name as parameter?
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Table and Column names CANNOT be replaced by parameters in PDO.
In that case you will simply want to filter and sanitize the data manually. One way to do this is to pass in shorthand parameters to the function that will execute th...
Where can I set environment variables that crontab will use?
...'cron' run a shell script that sets the environment before running the command.
Always.
# @(#)$Id: crontab,v 4.2 2007/09/17 02:41:00 jleffler Exp $
# Crontab file for Home Directory for Jonathan Leffler (JL)
#-----------------------------------------------------------------------------
#Min ...
Entity Framework and SQL Server View
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We had the same problem and this is the solution:
To force entity framework to use a column as a primary key, use ISNULL.
To force entity framework not to use a column as a primary key, use NULLIF.
An easy way to apply this is to wrap the select ...
Access denied for user 'root@localhost' (using password:NO)
I'm new to MySQL, I'm trying to run WordPress in my Windows desktop and it needs MySQL.
16 Answers
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How do I convert datetime to ISO 8601 in PHP
...at: ±[hh]:[mm], ±[hh][mm], or ±[hh].
But note that, +0X:00 is correct, and +0X00 is incorrect for extended usage. So it's better to use date("c"). A similar discussion here.
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Does a dot have to be escaped in a character class (square brackets) of a regular expression?
...r except ^, -, ] or \ is a literal.
This website is a brilliant reference and has lots of info on the nuances of different regex flavours.
http://www.regular-expressions.info/refcharclass.html
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