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Convert NaN to 0 in javascript
... 0;
...which will have the same effect as above.
If the intent was to test for more than just NaN, then you can do the same, but do a toNumber conversion first.
a = +a || 0
This uses the unary + operator to try to convert a to a number. This has the added benefit of converting things like nu...
NSString: isEqual vs. isEqualToString
...objects, and that the objects at a given index return YES for the isEqual: test.
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Testing the type of a DOM element in JavaScript
Is there a way to test the type of an element in JavaScript?
7 Answers
7
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PDO's query vs execute
...metimes there are rare exceptions to best practices, and you might want to test your environment both ways to see what will work best.
In one case, I found that query worked faster for my purposes because I was bulk transferring trusted data from an Ubuntu Linux box running PHP7 with the poorly sup...
What's the “average” requests per second for a production web application?
...
interesting, I was just load testing streaming on webpieces on records per second vs. requests per second. I think requests/second is in that same ballpark(100 to 200) but with streaming it shoots up to 1140 records / second (doing ndjson). Anyways tho...
Find out time it took for a python script to complete execution
...ate-able piece of code, timeit comes in handy.
From the timeit docs,
def test():
"Stupid test function"
L = []
for i in range(100):
L.append(i)
if __name__=='__main__':
from timeit import Timer
t = Timer("test()", "from __main__ import test")
print t.timeit()
The...
Regex Named Groups in Java
...and Matching Strings with Balanced Parentheses slide)
Example:
String:
"TEST 123"
RegExp:
"(?<login>\\w+) (?<id>\\d+)"
Access
matcher.group(1) ==> TEST
matcher.group("login") ==> TEST
matcher.name(1) ==> login
Replace
matcher.replaceAll("aaaaa_$1_sssss_$2____") ==>...
Mockito verify order / sequence of method calls
...fy: It is safe to define inOrder just before verify - after invoking some (tested) methods on mocks.
– user3078523
Aug 16 '17 at 16:33
...
In the shell, what does “ 2>&1 ” mean?
...
echo test > afile.txt
redirects stdout to afile.txt. This is the same as doing
echo test 1> afile.txt
To redirect stderr, you do:
echo test 2> afile.txt
>& is the syntax to redirect a stream to another file...
How to check whether a string contains a substring in Ruby
...clude on it's own is not ideal as it can throw a NoMethodError if nil test = nil test.include?("test") NoMethodError: undefined method `include?' for nil:NilClass should always convert the value being included to the expected value:- test.to_s.include?("test")
–...