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How do you check in python whether a string contains only numbers?
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Use str.isdigit:
>>> "12345".isdigit()
True
>>> "12345a".isdigit()
False
>>>
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UISegmentedControl below UINavigationbar in iOS 7
...HairlineViewController.swift
protocol HideableHairlineViewController {
func hideHairline()
func showHairline()
}
extension HideableHairlineViewController where Self: UIViewController {
func hideHairline() {
findHairline()?.hidden = true
}
func showHairline() {
findHairline()?...
JavaScript for…in vs for
... inherited from the prototype chain and the name of methods." You'll have fun if someone happens to use your code with Prototype loaded (even if your code doesn't actually use it), for instance.
– ijw
Aug 5 '09 at 12:11
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Escape angle brackets in a Windows command prompt
...nwanted) space at the end when parentheses are used.
Aint batch scripting fun ;-)
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How to fix “containing working copy admin area is missing” in SVN?
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fwiw, I had a similar situation and used svn --force delete __dir__. That solved the issue for...
Reading specific lines only
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fun fact: if you use a set instead of the list in the second example, you get O(1) running time. Look up in a list is O(n). Internally sets are represented as hashes, and thats why you get the O(1) running time. not a big dea...
Unable to show a Git tree in terminal
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git log --oneline --decorate --all --graph
A visual tree with branch names included.
Use th...
Convert javascript array to string
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Converting From Array to String is So Easy !
var A = ['Sunday','Monday','Tuesday','Wednesday'...
How to check if string input is a number? [duplicate]
...numeric() will do the job (Documentation for python3.x):
>>>a = '123'
>>>a.isnumeric()
True
But remember:
>>>a = '-1'
>>>a.isnumeric()
False
isnumeric() returns True if all characters in the string are numeric characters, and there is at least one character....
Which letter of the English alphabet takes up most pixels?
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Further to Ned Batchelder's awesomely practical answer, because I came here wondering about di...