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How to check if string input is a number? [duplicate]
...
Simply try converting it to an int and then bailing out if it doesn't work.
try:
val = int(userInput)
except ValueError:
print("That's not an int!")
sha...
Calculate relative time in C#
...return ts.Days + " days ago";
if (delta < 12 * MONTH)
{
int months = Convert.ToInt32(Math.Floor((double)ts.Days / 30));
return months <= 1 ? "one month ago" : months + " months ago";
}
else
{
int years = Convert.ToInt32(Math.Floor((double)ts.Days / 365));
return years <= 1 ? "one y...
Validate decimal numbers in JavaScript - IsNumeric()
...ial rule that says NaN is never equal to NaN, and so a value that can't be converted to a number (and only values that cannot be converted to numbers) will result in false.
The check on the length is for a special case involving empty strings. Also note that it falls down on your 0x89f test, but t...
How to split a string in Haskell?
... Data.List.Split> l
["1","2","3","4"]
Prelude Data.List.Split> let { convert :: [String] -> [Integer]; convert = map read }
Prelude Data.List.Split> let l2 = convert l
Prelude Data.List.Split> :t l2
l2 :: [Integer]
Prelude Data.List.Split> l2
[1,2,3,4]
...
TypeError: ObjectId('') is not JSON serializable
...y.
But this question shows that we can serialize using json_util.dumps(), convert back to dict using json.loads() and finally call Flask's jsonify on it.
Example (derived from previous question's answer):
from bson import json_util, ObjectId
import json
#Lets create some dummy document to prove...
Bold & Non-Bold Text In A Single UILabel?
...et nonBoldRange = targetString.range(of: formatter.string(from: date))
// Convert Range<Int> into NSRange
let nonBoldNSRange: NSRange? = nonBoldRange == nil ?
nil :
NSMakeRange(targetString.distance(from: targetString.startIndex, to: nonBoldRange!.lowerBound),
targetSt...
Node.js: Difference between req.query[] and req.params
...the URL and it's treated as a text.
If we need to work with numbers, and convert query statements from text to number, we can simply add a plus sign in front of statement.
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What is a lambda (function)?
...ow.FieldName > 15 );
LinqToSql can read that function (x > 15) and convert it to the actual SQL to execute using expression trees.
The statement above becomes:
select ... from [tablename]
where [FieldName] > 15 --this line was 'read' from the lambda function
This is different fr...
How can I use tabs for indentation in IntelliJ IDEA?
...ift + A > write "tabs" > double click on "To Tabs"
If you want to convert tabs to spaces, you can write "spaces", then choose "To Spaces".
Edit > Convert Indents > To Tabs
To convert tabs to spaces, you can chose "To Spaces" from the same place.
For all files
The paths in the othe...
How to delete an element from an array in C#
...
You can also convert your array to a list and call remove on the list. You can then convert back to your array.
int[] numbers = {1, 3, 4, 9, 2};
var numbersList = numbers.ToList();
numbersList.Remove(4);
...