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jQuery vs document.querySelectorAll

...t would be very hard to do in regular javascript . However , as far as I know, you can achieve the same result with document.querySelector or document.querySelectorAll , which are supported in Internet Explorer 8 and above. ...
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Creating an abstract class in Objective-C

I'm originally a Java programmer who now works with Objective-C. I'd like to create an abstract class, but that doesn't appear to be possible in Objective-C. Is this possible? ...
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javac : command not found

... I don't know exactly what yum install java will actually install. But to check for javac existence do: > updatedb > locate javac preferably as root. If it's not there you've probably only installed the Java runtime (JRE) and ...
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AttributeError: 'module' object has no attribute 'tests'

...ews.py) was still trying to import the deleted model. When I took out the now-obsolete import statement, problem solved. share | improve this answer | follow ...
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Can I query MongoDB ObjectId by date?

I know that ObjectIds contain the date they were created on. Is there a way to query this aspect of the ObjectId? 12 Answer...
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How to verify if a file exists in a batch file?

...file does or does not exist: if exist C:\myprogram\sync\data.handler echo Now Exiting && Exit if not exist C:\myprogram\html\data.sql Exit We will take those three files and put it in a temporary place. After deleting the folder, it will restore those three files. xcopy "test" "C:\temp" ...
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MD5 algorithm in Objective-C

... Thanks! Patched it up now. This was never a problem for me since in the original implementation, I always ran it in a dedicated thread ;) – Alexander W Oct 10 '14 at 8:59 ...
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SQLite in Android How to update a specific row

I've been trying to update a specific row for a while now, and it seems that there are two ways to do this. From what I've read and tried, you can just use the: ...
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javac is not recognized as an internal or external command, operable program or batch file [closed]

...jre). Enter the directory. Then enter the bin directory of that. You are now in the correct directory. Copy the path. If in File Explorer, click the address bar. If in Command Prompt, copy the prompt. The resulting Java path should be in the form of (without quotes): C:\Program Files\Java\jdkxxx...
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Pandas - How to flatten a hierarchical index in columns

...test version of pandas. It works with 0.18 but not with 0.20 (latest as of now) – TH22 Oct 10 '17 at 20:59 1 ...