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How to use RSpec's should_raise with any kind of exception?
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The syntax changed recently and now it is:
expect { ... }.to raise_error(ErrorClass)
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Unit test naming best practices [closed]
...of the issues with the Should pattern I describe above as its not easy to know at a glance which method is under test. For OOP I think it makes more sense to start the test name with the method under test. For a well designed class this should result in readable test method names. I now use a format...
Why Choose Struct Over Class?
...ruct version took 0.010532942s (900 times faster)
OLD RESULTS (from unknown time)
(Ran on struct/class with 1 field, not 10)
With release build on my MacBook Pro:
The class version took 1.10082 sec
The struct version took 0.02324 sec (50 times faster)
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Xcode doesn't show the line that causes a crash
...appened, or turn it ON to see where it happened, but with not WHY. Anyone know how to have both?
– Gabriel Jensen
Oct 1 '14 at 20:56
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How do you declare an interface in C++?
...that the compiler can, theoretically, see that vtable has no valid members now, and discard it altogether. With a virtual destructor with a body, said destructor can be called (virtually) e.g. in the middle of construction via this pointer (when constructed object is still of Parent type), and there...
What is the “Execute Around” idiom?
... Java 7 added try-with-resource, and Java 8 added lambdas. I know this is an old question/answer but I wanted to point this out for anyone looking at this question five and a half years later. Both of these language tools will help solve the problem this pattern was invented to fix.
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Is it a good practice to use try-except-else in Python?
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"I do not know if it is out of ignorance, but I do not like that
kind of programming, as it is using exceptions to perform flow control."
In the Python world, using exceptions for flow control is common and normal.
Even the Python ...
Clone private git repo with dockerfile
...ey was password protected which was causing the problem, a working file is now listed below (for help of future googlers)
FROM ubuntu
MAINTAINER Luke Crooks "luke@pumalo.org"
# Update aptitude with new repo
RUN apt-get update
# Install software
RUN apt-get install -y git
# Make ssh dir
RUN mkdi...
What is the difference between class and instance attributes?
...nce you get that, nothing complicated is happening here.
Hopefully it's now obvious why Alex used a list: the fact that you can mutate a list means it's easier to show that two variables name the same list, and also means it's more important in real-life code to know whether you have two lists or...
Efficient way to apply multiple filters to pandas DataFrame or Series
...ist or any iterable. We will create boolean variable just like before, but now we will negate the boolean variable by placing ~ in the front.
For example
list = [1, 0]
df[df.col1.isin(list)]
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