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Count number of matches of a regex in Javascript
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/*
* Example
*/
const count = (str) => {
const re = /[a-z]{3}/g
return ((str || '').match(re) || []).length
}
const str1 = 'abc, def, ghi'
const str2 = 'ABC, DEF, GHI'
console.log(`'${str1}' has ${count(str1)} occurrences of pattern '/[a-z]{3}/g'`)
console.log(`'${str2}' ...
JSON.NET Error Self referencing loop detected for type
... "$id":"2",
"Products":[
{
"$id":"3",
"Category":{
"$ref":"2"
},
"Id":2,
"Name":"Yogurt"
},
{
"$ref":"1"
}
],
"I...
MySQL Fire Trigger for both Insert and Update
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3 Answers
3
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Why does pylint object to single character variable names?
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edited Aug 9 '18 at 6:39
answered Feb 17 '14 at 16:12
w...
Rails 3 - can't install pg gem
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edited Mar 25 '13 at 6:47
Perception
73.9k1414 gold badges167167 silver badges184184 bronze badges
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How to update maven repository in Eclipse?
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ahmednabil88
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answered Mar 31 '10 at 20:21
Pascal ThiventPascal Thivent
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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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3 Answers
3
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Truncating floats in Python
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return '.'.join([i, (d+'0'*n)[:n]])
This is valid in Python 2.7 and 3.1+. For older versions, it's not possible to get the same "intelligent rounding" effect (at least, not without a lot of complicated code), but rounding to 12 decimal places before truncation will work much of the time:
def...