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Scala: What is a TypeTag and how do I use it?
... latter checks for structural equality, which often is not what should be done because it doesn't care about things such as prefixes (like in the example).
A TypeTag is completely compiler-generated, that means that the compiler creates and fills in a TypeTag when one calls a method expecting such ...
Why isn't vector a STL container?
...ctor<bool> as a special standard container where each bool uses only one bit of space rather than one byte as a normal bool would (implementing a kind of "dynamic bitset"). In exchange for this optimization it doesn't offer all the capabilities and interface of a normal standard container.
In...
MySQL Data - Best way to implement paging?
My iPhone app connects to my PHP web service to retrieve data from a MySQL database. A request can return 500 results.
7 An...
How do I work with a git repository within another repository?
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Per that article, one of the drawbacks is: > The responsibility of not mixing super and sub-project code in commits lies with you. Nobody got time for that (IMO)
– Robert Dundon
Nov 22 '16 at 14:59
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What is InnoDB and MyISAM in MySQL?
.../en/storage-engines.html
MyISAM: The default MySQL storage engine and the one that is used the most in Web, data warehousing, and other application environments. MyISAM is supported in all MySQL configurations, and is the default storage engine unless you have configured MySQL to use a different on...
Extract substring using regexp in plain bash
...PM (CST)
$ while read a b time x; do [[ $b == - ]] && echo $time; done < file.txt
another solution with bash regex :
$ [[ "US/Central - 10:26 PM (CST)" =~ -[[:space:]]*([0-9]{2}:[0-9]{2}) ]] &&
echo ${BASH_REMATCH[1]}
another solution using grep and look-around advanced r...
Big-O for Eight Year Olds? [duplicate]
...time wrapping my head around what they mean conceptually. For example, if one were to perform an O(1) operation on a data structure, I understand that the number of operations it has to perform won't grow because there are more items. And an O(n) operation would mean that you would perform a set o...
jQuery - Trigger event when an element is removed from the DOM
...ry helpful. I learned that this functionality is within the "Widget" component of jQuery UI if you aren't looking to download the whole UI library.
– Neil
May 10 '13 at 16:47
5
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Drop all duplicate rows across multiple columns in Python Pandas
...drop_duplicates function is great for "uniquifying" a dataframe. However, one of the keyword arguments to pass is take_last=True or take_last=False , while I would like to drop all rows which are duplicates across a subset of columns. Is this possible?
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How do you merge two Git repositories?
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Or read Eric Lee's "Merging Two Git Repositories Into One Repository Without Losing File History" saintgimp.org/2013/01/22/…
– Jifeng Zhang
Oct 8 '13 at 12:17
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