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Detect all Firefox versions in JS
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Or with regex var is_firefox = /firefox/i.test(navigator.userAgent)
– JackMahoney
Oct 1 '13 at 12:00
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Get all unique values in a JavaScript array (remove duplicates)
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new test case jsperf.com/array-filter-unique-vs-new-set/1 seems like new Set's trophy
– shuk
Jan 13 '19 at 18:55
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How to test if one java class extends another at runtime?
How to I test if a is a subclass of b ?
3 Answers
3
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Does JavaScript have a built in stringbuilder class?
...cked the performance on http://jsperf.com/javascript-concat-vs-join/2.
The test-cases concatenate or join the alphabet 1,000 times.
In current browsers (FF, Opera, IE11, Chrome), "concat" is about 4-10 times faster than "join".
In IE8, both return about equal results.
In IE7, "join" is about 100 ...
How to remove certain characters from a string in C++?
...rsToRemove) {};
bool operator()(char c)
{
for(const char* testChar = chars; *testChar != 0; ++testChar)
{
if(*testChar == c) { return true; }
}
return false;
}
private:
const char* chars;
};
int main()
{
std::string str("(555) 555-55...
Can you test google analytics on a localhost address?
I have to test out my new GA account on my local machine.
12 Answers
12
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List all indexes on ElasticSearch server?
...fq_1458925279526 1 6 0 0 1008b 144b
green open qa-test_learnq_1460483735129 1 6 0 0 1008b 144b
green open qa-testimportd_1458925361399 1 6 0 0 1008b 144b
green open qa-test123p_reports 1 6 3868280 25605 5.9gb 870.5mb
gr...
Resolving ambiguous overload on function pointer and std::function for a lambda using +
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VS15 gives you this fun error: test.cpp(543): error C2593: 'operator +' is ambiguous t\test.cpp(543): note: could be 'built-in C++ operator+(void (__cdecl *)(void))' t\test.cpp(543): note: or 'built-in C++ operator+(void (__stdcall *)(void))' t\test....
How to efficiently concatenate strings in go
... buffer bytes.Buffer
for i := 0; i < 1000; i++ {
buffer.WriteString("a")
}
fmt.Println(buffer.String())
}
This does it in O(n) time.
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How to check type of files without extensions in python?
...ess file types. There's even a windows port.
From the man page:
File tests each argument in an attempt to classify it. There are three
sets of tests, performed in this order: filesystem tests, magic number
tests, and language tests. The first test that succeeds causes the
file ty...