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Check if a row exists, otherwise insert
I need to write a T-SQL stored procedure that updates a row in a table. If the row doesn't exist, insert it. All this steps wrapped by a transaction.
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What is the difference between print and puts?
For example in this line of code I wrote, print and puts produce different results.
6 Answers
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How to write a simple Html.DropDownListFor()?
In ASP.NET MVC 2, I'd like to write a very simple dropdown list which gives static options. For example I'd like to provide choices between "Red", "Blue", and "Green".
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What is “pom” packaging in maven?
I was given a maven project to compile and get deployed on a tomcat server. I have never used maven before today, but I have been googling quite a bit. It seems like the top level pom.xml files in this project have the packaging type set as pom .
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Postgres unique constraint vs index
As I can understand documentation the following definitions are equivalent:
8 Answers
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Set every cell in matrix to 0 if that row or column contains a 0
Given a NxN matrix with 0s and 1s. Set every row that contains a 0 to all 0 s and set every column that contains a 0 to all 0 s.
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What are the various “Build action” settings in Visual Studio project properties and what do they do
For the most part, you just take whatever Visual Studio sets it for you as a default... I'm referring to the BuildAction property for each file selected in Solution Explorer. There are a number of options and it's difficult to know what each one of them will do.
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Recompile Heroku slug without push or config change
I'm wondering if there is a way to force Heroku to recompile the slug without pushing new commits and/or updating the config variables.
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When to choose checked and unchecked exceptions
In Java (or any other language with checked exceptions), when creating your own exception class, how do you decide whether it should be checked or unchecked?
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what is the difference between ajax and jquery and which one is better? [closed]
I am confused about using ajax or jquery so I want to know what the differences are and which one is better such as performance and complexity .
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