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Is there a Sleep/Pause/Wait function in JavaScript? [duplicate]
..., the concern isn't around anonymous functions, it's with code passed as a string, which must be executed via eval.
– Michael Haren
May 22 '18 at 11:12
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how get yesterday and tomorrow datetime in c#
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The trick is to use "DateTime" to manipulate dates; only use integers and strings when you need a "final result" from the date.
For example (pseudo code):
Get "DateTime tomorrow = Now + 1"
Determine date, day of week, day of month - whatever you want - of the resulting date.
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Format number as fixed width, with leading zeros [duplicate]
...to use sprintf. This uses C style formatting codes embedded in a character string to indicate the format of any other arguments passed to it. For example, the formatting code %3d means format a number as integer of width 3:
a <- seq(1,101,25)
sprintf("name_%03d", a)
[1] "name_001" "name_026" "n...
Correct way to check if a type is Nullable [duplicate]
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@ELMOJO Why would you expect that? String isn't a nullable value type.
– Jon Skeet
Sep 11 '18 at 22:09
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CSS values using HTML5 data attribute [duplicate]
...rding to caniuse.com, the function is still widely unsupported (except for strings in the content attribute of pseudo-elements). caniuse.com/#feat=css3-attr
– ne1410s
Nov 25 '16 at 8:58
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When and why should I use a namedtuple instead of a dictionary? [duplicate]
...don't have keys, so hashability isn't an issue.
However, they have a more stringent restriction -- their key-equivalents, "field names", have to be strings.
Basically, if you were going to create a bunch of instances of a class like:
class Container:
def __init__(self, name, date, foo, bar):
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How to check if a JavaScript variable is NOT undefined? [duplicate]
...could take which would also match that condition - e.g. 0, null, '' (empty string). These are called "falsy" values.
– Allan Jardine
Nov 9 '18 at 16:25
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Double negation (!!) in javascript - what is the purpose? [duplicate]
...alent to false in conditional statements:
false
null
undefined
The empty string "" (\ '')
The number 0
The number NaN
All other values are equivalent to true.
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What is the Python equivalent for a case/switch statement? [duplicate]
... @IanMobbs It's almost NEVER "proper" to put code in a constant string in quotes then eval it. 1) code doesn't get checked by your editor for validity. 2) it doesn't get optimised to bytecode at compilation. 3) you can't see syntax highlighting. 4) fiddly if you have multiple quotes - in...
Regex: ?: notation (Question mark and colon notation) [duplicate]
...e to this thread - just to build on ryanp's answer.
Assuming you have the string aaabbbccc
Regular Expression
(a)+(b)+(c)+
This would give you the following 3 groups that matched:
['a', 'b', 'c']
Regular Expression with non-capturing parenthesis
Use the ?: in the first group
(?:a)+(b)+(c)+...