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(How) can I count the items in an enum?
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enum foobar {foo, bar = 5, baz, quz = 20};
the number of items would be 4, but the integer values of the enum values would be way out of the array index range. Using enum values for array indexing is not safe, you should consider other options.
edit: as requested, made the special entry stick ou...
ruby inheritance vs mixins
...gs are
best encapsulated in modules. Correspondingly, as noted in section 4.1.1, class
names tend to be nouns, whereas module names are often adjectives (Stack
versus Stacklike).
A class can have only one superclass, but it can mix in as many modules as it wants. If
you’re using inheritance, ...
How to remove single character from a String
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24 Answers
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cartesian product in pandas
...port DataFrame, merge
df1 = DataFrame({'key':[1,1], 'col1':[1,2],'col2':[3,4]})
df2 = DataFrame({'key':[1,1], 'col3':[5,6]})
merge(df1, df2,on='key')[['col1', 'col2', 'col3']]
Output:
col1 col2 col3
0 1 3 5
1 1 3 6
2 2 4 5
3 2 4 6
See here f...
How to get the CPU Usage in C#?
...ce and between them i had to Sleep(500)
– Angel.King.47
Mar 7 '10 at 2:56
Matt is right. Even including the bugs, like...
How do you determine what SQL Tables have an identity column programmatically
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answered Sep 17 '08 at 21:44
DaveCrawfordDaveCrawford
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Change R default library path using .libPaths in Rprofile.site fails to work
... is RStudio material at: https://support.rstudio.com/hc/en-us/articles/200549016-Customizing-RStudio
In your case it appears that RStudio is not respecting the Rprofile.site settings or perhaps is overriding them by reading an .Rprofile setting from one of the RStudio defaults. It should also be me...
What does int argc, char *argv[] mean?
...lt; std::endl;
}
}
Running it with ./test a1 b2 c3 will output
Have 4 arguments:
./test
a1
b2
c3
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C++ Singleton design pattern
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In 2008 I provided a C++98 implementation of the Singleton design pattern that is lazy-evaluate...
How to change port number for apache in WAMP
...is http://localhost/ in the browser it is not working. I am getting a 404 error and blank page .
8 Answers
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