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Reference list item by index within Django template?
This may be simple, but I looked around and couldn't find an answer. What's the best way to reference a single item in a list from a Django template?
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Generic TryParse
...r one to decide what value they want if the string value is invalid. For example, -1 might mean invalid. public static T TryParse<T>(string value, TryParseHandler<T> handler, T defaultValue)
– Rhyous
Sep 30 '16 at 15:52
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What is the garbage collector in Java?
...to Java and confused about the garbage collector in Java. What does it actually do and when does it comes into action. Please describe some of the properties of the garbage collector in Java.
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Why is whitespace sometimes needed around metacharacters?
...okens in BASH. These characters are called metacharacters and they are |, &, ;, (, ), <, >, space and tab. On the other hand, curly braces ({ and }) are just ordinary characters that make up words.
Omitting the second space before } will do, since & is a metacharacter. Therefore, your...
image processing to improve tesseract OCR accuracy
...rove the results. I've noticed that text that is highly pixellated - for example that generated by fax machines - is especially difficult for tesseract to process - presumably all those jagged edges to the characters confound the shape-recognition algorithms.
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What is the best way to tell if a character is a letter or number in Java without using regexes?
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private static boolean isLetterOrDigit(char c) {
return (c >= 'a' && c <= 'z') ||
(c >= 'A' && c <= 'Z') ||
(c >= '0' && c <= '9');
}
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Checking whether a variable is an integer or not [duplicate]
...t use type. It is almost never the right answer in Python, since it blocks all the flexibility of polymorphism. For instance, if you subclass int, your new class should register as an int, which type will not do:
class Spam(int): pass
x = Spam(0)
type(x) == int # False
isinstance(x, int) # True
Thi...
Django - How to rename a model field using South?
...oing to use this, make sure "app_foo" is the database table name, so for example: "mainapp_profile", "name" is the old column name of the database (not the model field name), for example: "user_id" and "full_name" would be the new name you want the column to have (again, database column and not fiel...
Hover and Active only when not disabled
...):
button {
color: white;
cursor: pointer;
border-radius: 4px;
&:disabled{
opacity: 0.4;
&:hover{
opacity: 0.4; //this is what you want
}
}
&:hover{
opacity: 0.9;
}
}
sh...
What is Angular.noop used for?
...d it extremely helpful when writing a function that expects a callback.
Example:
function myFunction(id, value, callback) {
// some logic
return callback(someData);
}
The function above will return an error, when it gets called without specifying the third argument. myFunction(1, 'a');
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