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How to write LaTeX in IPython Notebook?

...you would. Then use nbconvert to turn the ipynb to TeX (code, figures and all), and run latex to render that to PDF, etc. You don't get live-rendered TeX in the browser like you do with MathJax / Markdown, but you do still have TeX / code in one document. – minrk ...
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Create space at the beginning of a UITextField

...but this is not the way. The reason you've to do it with a subclass is for all the edge cases. This code will probably crash before the subclass solution. But you are right that you shouldn't write code that is not strictly needed and can be provide by using the given libraries, but you shouldn't ab...
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Understanding NSRunLoop

... run loop directly, though there are some (networking) components that may allow you to specify which run loop they will use for I/O processing. A run loop for a given thread will wait until one or more of its input sources has some data or event, then fire the appropriate input handler(s) to proce...
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Is it safe to resolve a promise multiple times?

... rejected), that is it for a defered object - it is done. If you should call then(...) on it's promise again, you should immediately get the (first) resolved/rejected result. Additional calls to resolve() will not (should not?) have any effect. Not sure what happens if you attempt to reject a de...
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How to export all data from table to an insertable sql format?

I have a Table (call it A_table ) in a database (call it A_db ) in Microsoft SQL Server Management Studio, and there are 10 rows. ...
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What is Weak Head Normal Form?

... further (i.e. it contains no un-evaluated thunks). These expressions are all in normal form: 42 (2, "hello") \x -> (x + 1) These expressions are not in normal form: 1 + 2 -- we could evaluate this to 3 (\x -> x + 1) 2 -- we could apply the function "he" ++ "llo" ...
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Recent file history in Vim?

... :e #<1 opens last file, see :h c_#<. – Hotschke Dec 15 '15 at 16:42 ...
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How to remove a field from params[:something]

... = params.except[the one I wish to remove] This is a safer way to 'grab' all the params you need into a copy WITHOUT destroying the original passed in params (which is NOT a good thing to do as it will make debugging and maintenance of your code very hard over time). Or you could just pass direc...
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Understand the “Decorator Pattern” with a real world example

... Decorator pattern achieves a single objective of dynamically adding responsibilities to any object. Consider a case of a pizza shop. In the pizza shop they will sell few pizza varieties and they will also provide toppings in the menu. Now imagine a situation wherein if the piz...
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get UTC time in PHP

...i: a Unix timestamp is by definition always UTC. en.wikipedia.org/wiki/Unix_time – nikc.org Jul 20 '15 at 8:20 1 ...