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How do I update if exists, insert if not (AKA “upsert” or “merge”) in MySQL?
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How to delete (not cut) in Vim?
How can I delete a line without putting it into my default buffer?
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Angular.js: How does $eval work and why is it different from vanilla eval?
I was curious about the $scope.$eval you so often see in directives, so I checked out the source and found the following in rootScope.js :
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How do I show a Save As dialog in WPF?
I have a requirement in WPF/C# to click on a button, gather some data and then put it in a text file that the user can download to their machine. I can get the first half of this, but how do you prompt a user with a "Save As" dialog box? The file itself will be a simple text file.
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How do I select an element in jQuery by using a variable for the ID?
For example, the following selects a division with id="2":
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Large Numbers in Java
How would I go about doing calculations with extremely large numbers in Java?
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Formatting “yesterday's” date in python
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Zero-pad digits in string
I need to cast single figures (1 to 9) to (01 to 09). I can think of a way but its big and ugly and cumbersome. I'm sure there must be some concise way. Any Suggestions
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JQuery to load Javascript file dynamically
I have a very large javascript file I would like to load only if the user clicks on a certain button. I am using jQuery as my framework. Is there a built-in method or plugin that will help me do this?
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INSERT … ON DUPLICATE KEY (do nothing)
I have a table with a unique key for two columns:
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