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How to prevent ifelse() from turning Date objects into numeric objects
I am using the function ifelse() to manipulate a date vector. I expected the result to be of class Date , and was surprised to get a numeric vector instead. Here is an example:
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Where to find extensions installed folder for Google Chrome on Mac?
I can not find them under ~/Library/Application Support/Google/Chrome/; Where are they?
5 Answers
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Multiple lines of input in
I have this text input in a form:
10 Answers
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Set value to NULL in MySQL
I want a value to be set to NULL if nothing is put into the text box in the form I'm submitting. How can I make this happen?
I've tried inserting 'NULL' but this just adds the word NULL into the field.
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Invalid postback or callback argument. Event validation is enabled using '
I am getting the following error when I post back a page from the client-side. I have JavaScript code that modifies an asp:ListBox on the client side.
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Parse JSON in C#
I'm trying to parse some JSON data from the Google AJAX Search API. I have this URL and I'd like to break it down so that the results are displayed. I've currently written this code, but I'm pretty lost in regards of what to do next, although there are a number of examples out there with simplifie...
multi-step registration process issues in asp.net mvc (split viewmodels, single model)
I have a multi-step registration process , backed by a single object in domain layer , which have validation rules defined on properties.
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How to download Xcode DMG or XIP file?
...es the Mac App Store download the files to under Lion? I need the DMG file in order to repair something in my system, but how can I access that file?
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WebSockets vs. Server-Sent events/EventSource
Both WebSockets and Server-Sent Events are capable of pushing data to browsers. To me they seem to be competing technologies. What is the difference between them? When would you choose one over the other?
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load and execute order of scripts
There are so many different ways to include JavaScript in a html page. I know about the following options:
4 Answers
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