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When is JavaScript synchronous?

... JavaScript is always synchronous and single-threaded. If you're executing a JavaScript block of code on a page then no other JavaScript on that page will currently be executed. JavaScript is only asynchronous in the sense that it can make, for example, Ajax call...
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CSS @media print issues with background-color;

...e at this company and we have a product that uses miles of css. I'm attempting to make a printable stylesheet for our app but I'm having issues with background-color in @media print . ...
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Using a .php file to generate a MySQL dump

Here's the information I have: 15 Answers 15 ...
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How to have stored properties in Swift, the same way I had on Objective-C?

I am switching an application from Objective-C to Swift, which I have a couple of categories with stored properties, for example: ...
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How do I combine two data-frames based on two columns? [duplicate]

I know I can use the plyr and its friends to combine dataframes, and merge as well, but so far I don't know how to merge two dataframes with multiple columns based on 2 columns? ...
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Conditionally Remove Dataframe Rows with R [duplicate]

... Logic index: d<-d[!(d$A=="B" & d$E==0),] share | improve this answer | follow | ...
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How do I prevent node.js from crashing? try-catch doesn't work

... to the log or to the server end, but node.js just simply crashes. Surrounding my code with a try-catch doesn't work either since everything is done asynchronously. I would like to know what does everyone else do in their production servers. ...
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Display name of the current file in vim?

How do you display the filename of the file you are working on in vim? 9 Answers 9 ...
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How to concatenate a std::string and an int?

I thought this would be really simple but it's presenting some difficulties. If I have 23 Answers ...
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How can I format a nullable DateTime with ToString()?

How can I convert the nullable DateTime dt2 to a formatted string? 20 Answers 20 ...