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Pass variables to Ruby script via command line
...IRST_NAME"]'
> Andy Warhol
Drawbacks are present here to, you have to set all the variables before the script invocation (only for your ruby process) or to export them (shells like BASH):
> export FIRST_NAME='Andy Warhol'
> ruby -e 'puts ENV["FIRST_NAME"]'
In the latter case, your data...
How to remove line breaks from a file in Java?
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You need to set text to the results of text.replace():
String text = readFileAsString("textfile.txt");
text = text.replace("\n", "").replace("\r", "");
This is necessary because Strings are immutable -- calling replace doesn't change ...
How do I pass a method as a parameter in Python
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Yes it is, just use the name of the method, as you have written. Methods and functions are objects in Python, just like anything else, and you can pass them around the way you do variables. In fact, you can think about a method (or function) as a variable...
Converting a list to a set changes element order
Recently I noticed that when I am converting a list to set the order of elements is changed and is sorted by character.
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Understanding __get__ and __set__ and Python descriptors
...'s property type is implemented. A descriptor simply implements __get__, __set__, etc. and is then added to another class in its definition (as you did above with the Temperature class). For example:
temp=Temperature()
temp.celsius #calls celsius.__get__
Accessing the property you assigned the de...
Difference between string and char[] types in C++
...ng could very well have some additional debug fields in it, causing the offset of the pointer for dynamic strings to move.
– Cygon
Aug 21 '09 at 20:25
2
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How do you make a HTTP request with C++?
Is there any way to easily make a HTTP request with C++? Specifically, I want to download the contents of a page (an API) and check the contents to see if it contains a 1 or a 0. Is it also possible to download the contents into a string?
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How expensive is RTTI?
...LVM 5.0 compiler, with stock optimizations turned on (default release mode settings).
So, I have below 2 functions, each of which figures out the concrete type of an object either via 1) RTTI or 2) a simple switch. It does so 50,000,000 times. Without further ado, I present to you the relative run...
Why does a return in `finally` override `try`?
...s any ECMAScript identifier or empty.
It's clear that return false would set completion type of finally as return, which cause try ... finally to do 4. Return F.
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Where does Scala look for implicits?
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