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Loading cross-domain endpoint with AJAX

... I'm posting this in case someone faces the same problem I am facing right now. I've got a Zebra thermal printer, equipped with the ZebraNet print server, which offers a HTML-based user interface for editing multiple settings, seeing the printer's current status, etc. I need to get the status of the...
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Return None if Dictionary key is not available

I need a way to get a dictionary value if its key exists, or simply return None , if it does not. 11 Answers ...
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Any way to replace characters on Swift String?

I am looking for a way to replace characters in a Swift String . 21 Answers 21 ...
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Tools for JPEG optimization? [closed]

Do you know of any tools (preferrably command-line) to automatically and losslessly optimize JPEGs that I could integrate into our build environment? For PNGs I'm currently using PNGOUT , and it generally saves around 40% bandwidth/image size. ...
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If threads share the same PID, how can they be identified?

...hread's "PID"), and there's where gettid(2) comes in. This way I can tell, if we're in the main thread or not. – Tomasz Gandor Nov 21 '14 at 12:40 2 ...
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How do you sign a Certificate Signing Request with your Certification Authority?

...arlier, because they can complicate things (they were unused at the time). Now you'll see how they are used, so hopefully they will make sense. base_dir = . certificate = $base_dir/cacert.pem # The CA certifcate private_key = $base_dir/cakey.pem # The CA private key new_certs_dir = $b...
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In Django, how does one filter a QuerySet with dynamic field lookups?

... A simplified example: In a Django survey app, I wanted an HTML select list showing registered users. But because we have 5000 registered users, I needed a way to filter that list based on query criteria (such as just people who co...
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Private and Protected Members : C++

Can someone enlighten me as to the difference between private and protected members in classes? 17 Answers ...
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Is it a good practice to use an empty URL for a HTML form's action attribute? (action=“”)

I am wondering if anyone can give a "best practices" response to using blank HTML form actions to post back to the current page. ...
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Cross compile Go on OSX?

...eem to have improved the cross compilation process, meaning it is built in now. No ./make.bash-ing or brew-ing required. The process is described here but for the TLDR-ers (like me) out there: you just set the GOOS and the GOARCH environment variables and run the go build. For the even lazier copy...