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Check if image exists on server using JavaScript?
...vascript is there a way to tell if a resource is available on the server? For instance I have images 1.jpg - 5.jpg loaded into the html page. I'd like to call a JavaScript function every minute or so that would roughly do the following scratch code...
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Multiple inheritance for an anonymous class
How can an anonymous class implement two (or more) interfaces? Alternatively, how can it both extend a class and implement an interface?
For example, I want to create an object of anonymous class that extends two interfaces:
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How can you diff two pipelines in Bash?
How can you diff two pipelines without using temporary files in Bash? Say you have two command pipelines:
3 Answers
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structure vs class in swift language
From Apple book
"One of the most important differences between structures and classes is that structures are always copied when they are passed around in your code, but classes are passed by reference."
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What is the best way to ensure only one instance of a Bash script is running? [duplicate]
...] $
[Terminal #2] $ lockfile -r 0 /tmp/the.lock
[Terminal #2] lockfile: Sorry, giving up on "/tmp/the.lock"
[Terminal #1] $ rm -f /tmp/the.lock
[Terminal #1] $
[Terminal #2] $ lockfile -r 0 /tmp/the.lock
[Terminal #2] $
After /tmp/the.lock has been acquired your script will be the only one w...
Print string and variable contents on the same line in R
Is there a way to print text and variable contents on the same line? For example,
8 Answers
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What is a message pump?
... a year ago) there is a discussion of problems that can come with running Word in a non-interactive session. The (quite strong) advice given there is not to do so. In one post it is stated "The Office APIs all assume you are running Office in an interactive session on a desktop, with a monitor, ke...
What are the new documentation commands available in Xcode 5? [closed]
... the ability to document your own code with a special comment syntax. The format is similar to doxygen, but appears to only support a subset of those features .
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Can I mix Swift with C++? Like the Objective-C .mm files
...-C++.
Swift doesn't have the same relationship. It is not a superset of C or C++, and you can't directly use either in a .swift file.
"Using Swift with Cocoa and Objective-C" also tells us:
You cannot import C++ code directly into Swift. Instead, create an Objective-C or C wrapper for C++ code...
When serving JavaScript files, is it better to use the application/javascript or application/x-javas
... in the title. And to add some context: I'm not asking what is the best according to what the specs are saying, but rather what works the best given the mix of browsers deployed nowadays.
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