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Proper way to wait for one function to finish before continuing?

...ne!'); }); } As per @Janaka Pushpakumara's suggestion, you can now use arrow functions to achieve the same thing. For example: firstFunction(() => console.log('huzzah, I\'m done!')) Update: I answered this quite some time ago, and really want to update it. While callbacks are abso...
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Python error “ImportError: No module named”

...ll put a .bin extension to indicate binary data." The missing __init__.py (now called __init__.py.bin) means python doesn't understand toolkit as a package. You create __init__.py in the appropriate directory and everything works... ? ...
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Simple Digit Recognition OCR in OpenCV-Python

... letter_recognition.data file that comes with OpenCV samples. I wanted to know what is inside that file. It contains a letter, along with 16 features of that letter. And this SOF helped me to find it. These 16 features are explained in the paperLetter Recognition Using Holland-Style Adaptive Class...
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Detect Chrome extension first run / update

... Updated answer to reflect v3 of manifest: Chromium now has a chrome.runtime set of APIs, which allow you to fetch the version of the extension. To get the current version: chrome.runtime.getManifest().version To listen when the extension has been first installed, when th...
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Is there a JavaScript / jQuery DOM change listener?

... Edit This answer is now deprecated. See the answer by apsillers. Since this is for a Chrome extension, you might as well use the standard DOM event - DOMSubtreeModified. See the support for this event across browsers. It has been supported in C...
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Calculate MD5 checksum for a file

...'s fine. Personally I'd probably use SHA-256 just out of habit :) I don't know about support for CRC32 in .NET offhand, but you can probably search for it as quickly as I can :) – Jon Skeet Jul 30 '14 at 13:40 ...
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Differences between Java 8 Date Time API (java.time) and Joda-Time

I know there are questions relating to java.util.Date and Joda-Time. But after some digging, I couldn't find a thread about the differences between the java.time API (new in Java 8 , defined by JSR 310 ) and Joda-Time . ...
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Loop through files in a directory using PowerShell

... not sure what I'm doing wrong but this is not working - I now get no output files (and no errors): $files = Get-ChildItem "C:\Users\gerhardl\Documents\My Received Files\" $files | Where-Object { $outFile = $_.Name + "out" Get-Content $_.FullName | Where-Object { ...
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What is the significance of #pragma marks? Why do we need #pragma marks?

...wer showing what pragma marks look like (in that menu or wherever they are now) in the new XCode? – user7804781 Jul 27 '18 at 17:54 ...
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How do you automatically set text box to Uppercase?

... This is not a full solution, since placeholder is now uppercase (which in most cases shouldn't be). There's no other way than using JavaScript. – tomericco Mar 22 '16 at 19:05 ...