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What is a NullReferenceException, and how do I fix it?
... p1.Books.Add(...) statements.
Array
int[] numbers = null;
int n = numbers[0]; // numbers is null. There is no array to index.
Array Elements
Person[] people = new Person[5];
people[0].Age = 20 // people[0] is null. The array was allocated but not
// initialized. There is no Pers...
What's the difference between hard and soft floating point numbers?
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Hard floats use an on-chip floating point unit. Soft floats emulate one in software. The differ...
Initialise a list to a specific length in Python [duplicate]
How do I initialise a list with 10 times a default value in Python?
3 Answers
3
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Is it possible to make relative link to image in a markdown file in a gist?
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answered Mar 30 '16 at 15:32
markandmarkand
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How can I create a simple message box in Python?
... included library with Python install.
ctypes.windll.user32.MessageBoxW(0, "Your text", "Your title", 1)
Or define a function (Mbox) like so:
import ctypes # An included library with Python install.
def Mbox(title, text, style):
return ctypes.windll.user32.MessageBoxW(0, text, title, styl...
Custom toast on Android: a simple example
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202
Use the below code of a custom Toast. It may help you.
toast.xml
<LinearLayout xmlns:andro...
Change old commit message on Git
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130
It says:
When you save and exit the editor, it will rewind you back to that last commit in that...
How do I add a submodule to a sub-directory?
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edited Jul 9 '18 at 11:30
mbx
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answered Jan 27 ...
Understanding Canvas and Surface concepts
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SabeehSabeeh
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4
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How can I count all the lines of code in a directory recursively?
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edited Jun 20 at 9:12
Community♦
111 silver badge
answered Aug 31 '09 at 17:50
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