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how does multiplication differ for NumPy Matrix vs Array classes?

... and b) there's additional overhead compared to a "normal" numpy array. If all you're doing is linear algebra, then by all means, feel free to use the matrix class... Personally I find it more trouble than it's worth, though. For arrays (prior to Python 3.5), use dot instead of matrixmultiply. E.g...
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Why should you use an ORM? [closed]

... of ORM's, I'd propose that the use-case is fairly limited. I have never really used anything but MySql and sqlite for about a decade. I think it's probably a very rare requirement for most developers. – troelskn Dec 29 '09 at 12:44 ...
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Set the table column width constant regardless of the amount of text in its cells?

...ny extra text from coming out of the table. You should make sure to leave all of the bordering and sizing for CSS, too. Ok so here's what I have: table { border: 1px solid black; table-layout: fixed; width: 200px; } th, td { border: 1px solid black; width: 100px; overfl...
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CSS media queries: max-width OR max-height

...iting. It's been a good chance to learn myself! Take the time to systematically read though and I hope it will be helpful. Media Queries Media queries essentially are used in web design to create device- or situation-specific browsing experiences; this is done using the @media declaration within...
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Sometimes adding a WCF Service Reference generates an empty reference.cs

... Generally I find that it's a code-gen issue and most of the time it's because I've got a type name conflict it couldn't resolve. If you right-click on your service reference and click configure and uncheck "Reuse Types in Referen...
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Programmatically change log level in Log4j2

I'm interested in programmatically changing the log level in Log4j2. I tried looking at their configuration documentation but that didn't seem to have anything. I also tried looking in the package: org.apache.logging.log4j.core.config , but nothing in there looked helpful either. ...
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Find a string by searching all tables in SQL Server Management Studio 2008

Is there any way to search for a string in all tables of a database in SQL Server Management Studio 2008? 8 Answers ...
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Disable browser's back button

... not obliged to do AFAIK) they still provide a way to reload that page (usually after showing a warning dialog). So if you really don't want your users going back to that page, this may be worse, since the request for that page will HAVE to make its way all the way to the origin server. You will n...
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How to stop creating .DS_Store on Mac? [closed]

... Please install http://asepsis.binaryage.com/ and then reboot your mac. ASEPSIS redirect all .DS_Store on your mac to /usr/local/.dscage After that, You could delete recursively all .DS_Store from your mac. find ~ -name ".DS_Store" -d...
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What does |= (single pipe equal) and &=(single ampersand equal) mean

...icit cast, and the target variable is only evaluated once, but that's basically the gist of it. In terms of the non-compound operators, & is a bitwise "AND" and | is a bitwise "OR". EDIT: In this case you want Folder.Attributes &= ~FileAttributes.System. To understand why: ~FileAttribute...