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Regex select all text between tags
...means "OR".
+? Plus character states to select one or more of the above - order does not matter. Question mark changes the default behavior from 'greedy' to 'ungreedy'.
(?=(</pre>)) Selection have to be appended by the </pre> tag
Depending on your use case you might need to add some...
Comparing two dataframes and getting the differences
...hod, and exception is raised if differences found, even in columns/indices order.
If I got you right, you want not to find changes, but symmetric difference. For that, one approach might be concatenate dataframes:
>>> df = pd.concat([df1, df2])
>>> df = df.reset_index(drop=True)
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LLVM vs clang on OS X
...ediate representation on its own; it needs a language-specific frontend in order to do so. If people just refer to LLVM, they probably mean just the low-level library and tools. Some people might refer to Clang or llvm-gcc incorrectly as "LLVM", which may cause some confusion.
llvm-gcc is a modifie...
When would you use a List instead of a Dictionary?
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The List would also be useful when you care about the order of the items.
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Best architectural approaches for building iOS networking applications (REST clients)
...er declares services which we use for interacting with external systems in order to send or receive data which is represented in our domain model. So usually we have services for communication with server APIs (per entity), messaging services (like PubNub), storage services (like Amazon S3), etc. Ba...
Java code To convert byte to Hexadecimal
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StringBuffer buffer = new StringBuffer();
Step 2: Isolate the higher order bits, convert them to hex, and append them to the buffer
Given the binary number 1111 1110, we can isolate the higher order bits by first shifting them over by 4, and then zeroing out the rest of the number. Logically ...
How to declare an array in Python?
...*The default built-in Python type is called a list, not an array. It is an ordered container of arbitrary length that can hold a heterogenous collection of objects (their types do not matter and can be freely mixed). This should not be confused with the array module, which offers a type closer to th...
How to get a reversed list view on a list in Java?
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Unlike Collections.reverse, this is purely a view... it doesn't alter the ordering of elements in the original list. Additionally, with an original list that is modifiable, changes to both the original list and the view are reflected in the other.
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How to convert a table to a data frame
...need -- apparently, the table needs to somehow be converted to a matrix in order to be appropriately translated into a data frame. I found more details on this as.data.frame.matrix() function for contingency tables at the Computational Ecology blog.
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How to wait for several Futures?
... fail, whereas with for comprehension you get the first error in traversal order of the input collection (even if another one failed first). For example:
val f1 = Future { Thread.sleep(1000) ; 5 / 0 }
val f2 = Future { 5 }
val f3 = Future { None.get }
Future.sequence(List(f1,f2,f3)).onFailure{case...