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Common programming mistakes for Clojure developers to avoid [closed]

...ix which used leading zeros to maintain proper rows and columns. Mathematically this is correct, since leading zero obviously don't alter the underlying value. Attempts to define a var with this matrix, however, would fail mysteriously with: java.lang.NumberFormatException: Invalid number: 08 whi...
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Google Chrome Printing Page Breaks

... I've used the following approach successfully in all major browsers including Chrome: <!DOCTYPE html> <html> <head> <meta http-equiv="content-type" content="text/html;charset=UTF-8" /> <title>Paginated HTML</title> <sty...
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What is a “web service” in plain English?

... Simplified, non-technical explanation: A web serivce allows a PROGRAM to talk to a web page, instead of using your browser to open a web page. Example: I can go to maps.google.com, and type in my home address, and see a map of where I live in my browser. But what if you were...
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How to revert to origin's master branch's version of file

...hen: git checkout origin/master filename Assuming you want to blow away all commits from your branch (VERY DESTRUCTIVE): git reset --hard origin/master share | improve this answer | ...
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Why do we need boxing and unboxing in C#?

... Why To have a unified type system and allow value types to have a completely different representation of their underlying data from the way that reference types represent their underlying data (e.g., an int is just a bucket of thirty-two bits which is completely ...
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How do I find duplicates across multiple columns?

...simple and efficient means to locate unwanted repetition, whilst also list all affected rows and all wanted columns: SELECT t.* FROM ( SELECT s.* , COUNT(*) OVER (PARTITION BY s.name, s.city) AS qty FROM stuff s ) t WHERE t.qty > 1 ORDER BY t.name, t.city While most...
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LINQ: When to use SingleOrDefault vs. FirstOrDefault() with filtering criteria

...amount of results but you state that you only want the first one. I personally find the semantics very different and using the appropriate one, depending on the expected results, improves readability. share | ...
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Why is using the JavaScript eval function a bad idea?

The eval function is a powerful and easy way to dynamically generate code, so what are the caveats? 26 Answers ...
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What are the alternatives now that the Google web search API has been deprecated? [closed]

... From the TOS: "You specifically agree not to access (or attempt to access) any of the Services through any automated means (including use of scripts or web crawlers)..." – ændrük Mar 6 '11 at 17:53 ...
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How to use the “number_to_currency” helper method in the model rather than view?

... It’s not available because its use in a model (typically) violates MVC (and it does seem to in your case). You're taking data and manipulating it for presentation. This, by definition, belongs in the view, not the model. Here are some solutions: Use a presenter or view mode...