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How can I dynamically create derived classes from a base class
For example I have a base class as follows:
3 Answers
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Will GetType() return the most derived type when called from the base class?
Will GetType() return the most derived type when called from the base class?
3 Answers
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How to append text to a text file in C++?
...t main() {
std::ofstream outfile;
outfile.open("test.txt", std::ios_base::app); // append instead of overwrite
outfile << "Data";
return 0;
}
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What are the differences between LDAP and Active Directory?
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Active Directory is a database based system that provides authentication, directory, policy, and other services in a Windows environment
LDAP (Lightweight Directory Access Protocol) is an application protocol for querying and modifying items in direc...
Changing the “tick frequency” on x or y axis in matplotlib?
...tor:
import matplotlib.ticker as plticker
loc = plticker.MultipleLocator(base=1.0) # this locator puts ticks at regular intervals
ax.xaxis.set_major_locator(loc)
There are several different types of locator depending upon your needs.
Here is a full example:
import matplotlib.pyplot as plt
impo...
How can I recursively find all files in current and subfolders based on wildcard matching?
How can I recursively find all files in current and subfolders based on wildcard matching?
16 Answers
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Initialize class fields in constructor or at declaration?
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Actually it does matter. If the base class constructor calls a virtual method (which is generally a bad idea, but can happen) which is overridden in the derived class, then using instance variable initializers the variable will be initialized when the metho...
Split string based on regex
... for help, clarification, or responding to other answers.Making statements based on opinion; back them up with references or personal experience.To learn more, see our tips on writing great answers.
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Converting an int to std::string
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Overkill? Based on what? boost.org/doc/libs/1_53_0/doc/html/boost_lexical_cast/…
– Catskul
Jun 3 '13 at 22:34
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Rails - How to use a Helper Inside a Controller
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You can use
helpers.<helper> in Rails 5+ (or ActionController::Base.helpers.<helper>)
view_context.<helper> (Rails 4 & 3) (WARNING: this instantiates a new view instance per call)
@template.<helper> (Rails 2)
include helper in a singleton class and then singleton.h...