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Combining two expressions (Expression)
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@Aron now look at the date: the .NET framework visitor (ExpressionVisitor) did not exist back then; I have a related example on stackoverflow from a similar date where it implements the visitor manually: it is a lot of code.
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Why do you need explicitly have the “self” argument in a Python method?
...k bork bork!
>>> c.foo()
Hi!
>>>
It also (as far as I know) makes the implementation of the python runtime easier.
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How do I use extern to share variables between source files?
I know that global variables in C sometimes have the extern keyword. What is an extern variable? What is the declaration like? What is its scope?
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TypeError: 'module' object is not callable
...ple who took time to up vote (myself included) who didn't understand this. Now, it's obvious, and next time I reach in my toolbox, I will find this tool when a module is reported as "not callable". Getting started with a new language is the toughest part.
– jmort253
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Facebook Android Generate Key Hash
...ate a new certificate when you next try to build a debug package.
Let me know if that works.
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Splitting templated C++ classes into .hpp/.cpp files--is it possible?
...and lib files to hide the implementation, it is simply not possible.
To know why, let us look at the compilation process. The header files are never compiled. They are only preprocessed. The preprocessed code is then clubbed with the cpp file which is actually compiled. Now if the compiler has to ...
How to rename a single column in a data.frame?
I know if I have a data frame with more than 1 column, I can use
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Function return value in PowerShell
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With PowerShell 5 we now have the ability to create classes. Change your function into a class, and return will only return the object immediately preceding it. Here is a real simple example.
class test_class {
[int]return_what() {
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Get bitcoin historical data [closed]
... acquired live through bitstamp's pusher API which is what I'm doing right now. After indexing bitstamp for a day, I downloaded the bitstampUSD.csv and prepended the data to have a complete picture
– nurettin
Mar 5 '14 at 17:40
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Current time in microseconds in java
...ave System.nanoTime(), but that just gives an offset from some previously known time. So whilst you can't take the absolute number from this, you can use it to measure nanosecond (or higher) precision.
Note that the JavaDoc says that whilst this provides nanosecond precision, that doesn't mean nano...