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How to dynamically create a class?
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Yes, you can use System.Reflection.Emit namespace for this. It is not straight forward if you have no experience with it, but it is certainly possible.
Edit: This code might be flawed, but it will give you the general idea and hopefully off to a good start towards the goal....
Reference: What is variable scope, which variables are accessible from where and what are “undefined
...included code as applies to any other code: only functions separate scope. For the purpose of scope, you may think of including files like copy and pasting code:
c.php
<?php
function myFunc() {
include 'a.php';
echo $foo; // works
}
myFunc();
echo $foo; // doesn't work!
In the a...
Linux - Replacing spaces in the file names
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This should do it:
for file in *; do mv "$file" `echo $file | tr ' ' '_'` ; done
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How to implement a rule engine?
...ad of 'greater_than' etc. - this is because 'GreaterThan' is the .NET name for the operator, therefore we don't need any extra mapping.
If you need custom names you can build a very simple dictionary and just translate all operators before compiling the rules:
var nameMap = new Dictionary<string,...
How can we match a^n b^n with Java regex?
...nly write a Java regex pattern to match anbn. It uses a positive lookahead for assertion, and one nested reference for "counting".
Rather than immediately giving out the pattern, this answer will guide readers through the process of deriving it. Various hints are given as the solution is slowly cons...
Concatenating two one-dimensional NumPy arrays
...e able to concatenate them using numpy.concatenate . But I get this error for the code below:
6 Answers
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How to throw std::exceptions with variable messages?
This is an example of what I often do when I want to add some information to an exception:
8 Answers
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ORA-12514 TNS:listener does not currently know of service requested in connect descriptor
...irectory it uses) - in my case, listener.ora in that directory contained information pertaining to an old database instance that i had uninstalled - quick and dirty way was to copy the entire contents of listener.ora from my current installation of Oracle Express, to that other directory that listen...
Overriding superclass property with different type in Swift
...assis
} else {
println("incorrect chassis type for racecar")
}
}
}
}
It seems one cannot declare a property with the let syntax and override it with var in it’s subclass or vice-versa, which may be because the superclass implementation might no...
How to create local notifications?
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Here is sample code for LocalNotification that worked for my project.
Objective-C:
This code block in AppDelegate file :
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
...