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Can someone explain the dollar sign in Javascript?
...ho coded it came from PHP. It has the same effect as if you had named it "_item" or "item" or "item$$".
As a suffix (like "item$", pronounced "items"), it can signify an observable such as a DOM element as a convention called "Finnish Notation" similar to the Hungarian Notation.
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node.js: read a text file into an array. (Each line an item in the array.)
I would like to read a very, very large file into a JavaScript array in node.js.
13 Answers
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How can I print variable and string on same line in Python?
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If you are using python 3.6 or latest,
f-string is the best and easy one
print(f"{your_varaible_name}")
What exactly are iterator, iterable, and iteration?
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Iteration is a general term for taking each item of something, one after another. Any time you use a loop, explicit or implicit, to go over a group of items, that is iteration.
In Python, iterable and iterator have specific meanings.
An iterable is an object that has...
Vertically centering Bootstrap modal window
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Best way I found for all HTML5 browsers:
body.modal-open .modal {
display: flex !important;
height: 100%;
}
body.modal-open .modal .modal-dialog {
margin: auto;
}
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Is there a better way to write this null check, and a non-empty check, in groovy?
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no: GreenGiant's solution is the best: check List members = null; and List members = [ [age: 12], [age: 24], [age: null], null ] against both the solutions
– BTakacs
Jan 7 '16 at 15:20
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Getting attributes of a class
... instance attributes just use
for attribute, value in my_instance.__dict__.items()
>>> from __future__ import (absolute_import, division, print_function)
>>> class MyClass(object):
... def __init__(self):
... self.a = 2
... self.b = 3
... def print_instance_attributes(...
Python ValueError: too many values to unpack [duplicate]
...over the keys and the values (the tuple "k, m"), we use self.materials.iteritems().
However, since you're throwing the key away anyway, you may as well simply iterate over the dictionary's values:
for m in self.materials.itervalues():
In Python 3.x, prefer dict.values() (which returns a dictiona...
The case against checked exceptions
...ld be handled, but were always incompatible with "throw early, catch late" best practice. Opening a file is a cherry-picked example, which can be handled. Most IOException (eg writing a byte), SQLException, RemoteException are impossible to handle in a meaningful way. Failure or retry should be at "...
Problems with DeploymentItem attribute
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DeploymentItem is a bit of a mess.
Each file in your solution will have a "Copy To Output Folder" setting in VS.NET. You need this to be "Copy Always" (or similar) in order to get the files into the output folder.
Check that you've ...