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List of lists changes reflected across sublists unexpectedly
...o it:
x = [1] * 4
l = [x] * 3
print(f"id(x): {id(x)}")
# id(x): 140560897920048
print(
f"id(l[0]): {id(l[0])}\n"
f"id(l[1]): {id(l[1])}\n"
f"id(l[2]): {id(l[2])}"
)
# id(l[0]): 140560897920048
# id(l[1]): 140560897920048
# id(l[2]): 140560897920048
x[0] = 42
print(f"x: {x}")
# x: [42, ...
How can I convert comma separated string into a List
...
answered Feb 15 '12 at 20:59
dasblinkenlightdasblinkenlight
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...
Can I change the checkbox size using CSS?
...type=checkbox]
{
/* Double-sized Checkboxes */
-ms-transform: scale(2); /* IE */
-moz-transform: scale(2); /* FF */
-webkit-transform: scale(2); /* Safari and Chrome */
-o-transform: scale(2); /* Opera */
transform: scale(2);
padding: 10px;
}
/* Might want to wrap a span ar...
Google Maps API 3 - Custom marker color for default (dot) marker
...urls:
http://chart.apis.google.com/chart?chst=d_map_pin_letter&chld=%E2%80%A2|FE7569
Which looks like this: the image is 21x34 pixels and the pin tip is at position (10, 34)
And you'll also want a separate shadow image (so that it doesn't overlap nearby icons):
http://chart.apis.google.com...
Syntax for a single-line Bash infinite while loop
...
12 Answers
12
Active
...
What's the difference between “version number” in iTunes Connect, “bundle version”, “bundle version
...n number shown in the App Store; This must be a pure version number like 1.2.3
Bundle Version (CFBundleVersion)
This doesn't need to be a pure version number. This can be something like 12345 or 1.2.3 (Build 12345AB). This is shown in the About window for Mac OS X apps for example and is often mor...
How to concatenate properties from multiple JavaScript objects
...ject.
MDN documentation on Object.assign()
var o1 = { a: 1 };
var o2 = { b: 2 };
var o3 = { c: 3 };
var obj = Object.assign({}, o1, o2, o3);
console.log(obj); // { a: 1, b: 2, c: 3 }
Object.assign is supported in many modern browsers but not yet all of them. Use a transpiler like...
What are best practices for validating email addresses on iOS 2.0
...is the cleanest way to validate an email address that a user enters on iOS 2.0?
13 Answers
...
What does “SyntaxError: Missing parentheses in call to 'print'” mean in Python?
...to use Python 3 to follow an example or run a program that uses the Python 2 print statement:
print "Hello, World!"
The statement above does not work in Python 3. In Python 3 you need to add parentheses around the value to be printed:
print("Hello, World!")
“SyntaxError: Missing parent...
What exactly does big Ө notation represent?
...
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edited Aug 20 '17 at 2:43
Pierre-Antoine Guillaume
54077 silver badges1919 bronze badges
...