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How to avoid mysql 'Deadlock found when trying to get lock; try restarting transaction'
I have a innoDB table which records online users. It gets updated on every page refresh by a user to keep track of which pages they are on and their last access date to the site. I then have a cron that runs every 15 minutes to DELETE old records.
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Importance of varchar length in MySQL table
I have a MySQL table where rows are inserted dynamically. Because I can not be certain of the length of strings and do not want them cut off, I make them varchar(200) which is generally much bigger than I need. Is there a big performance hit in giving a varchar field much more length than necessar...
Call a stored procedure with parameter in c#
I can do a delete, insert and update in my program and I try to do an insert by call a created stored procedure from my database.
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How do you make an array of structs in C?
I'm trying to make an array of structs where each struct represents a celestial body.
7 Answers
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Looping through the content of a file in Bash
How do I iterate through each line of a text file with Bash ?
13 Answers
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Preventing Laravel adding multiple records to a pivot table
I have a many to many relationship set up and working, to add an item to the cart I use:
5 Answers
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What is the simplest way to get indented XML with line breaks from XmlDocument?
When I build XML up from scratch with XmlDocument , the OuterXml property already has everything nicely indented with line breaks. However, if I call LoadXml on some very "compressed" XML (no line breaks or indention) then the output of OuterXml stays that way. So ...
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Why can't I do ?
It works if the html file is local (on my C drive), but not if the html file is on a server and the image file is local. Why is that?
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What are unit tests, integration tests, smoke tests, and regression tests?
What are unit tests, integration tests, smoke tests, and regression tests? What are the differences between them and which tools can I use for each of them?
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Using emit vs calling a signal as if it's a regular function in Qt
Let's say I have this signal:
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