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How to decide font color in white or black depending on background color?
...ensities. Each 2 digits of the code represent a value in hexadecimal (base-16) notation. I won't get into the details of the conversion here, they're easy to look up.
Once you have the intensities for the individual colors, you can determine the overall intensity of the color and choose the corresp...
Python Empty Generator Function
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135
You can use return once in a generator; it stops iteration without yielding anything, and thus...
What’s the difference between “Array()” and “[]” while declaring a JavaScript array?
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JavaScript checking for null vs. undefined and difference between == and ===
...oercion to try to get the values to match, and === won't. So for instance "1" == 1 is true, because "1" coerces to 1. But "1" === 1 is false, because the types don't match. ("1" !== 1 is true.) The first (real) step of === is "Are the types of the operands the same?" and if the answer is "no", the r...
How to find encoding of a file via script on Linux?
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JSON left out Infinity and NaN; JSON status in ECMAScript?
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Infinity and NaN aren't keywords or anything special, they are just properties on the global obj...
How can a LEFT OUTER JOIN return more records than exist in the left table?
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How to verify an XPath expression in Chrome Developers tool or Firefox's Firebug?
...be an overkill)
Here is how you search XPath in Elements panel:
Press F12 to open Chrome Developer Tool
In "Elements" panel, press Ctrl+F
In the search box, type in XPath or CSS Selector, if elements are found, they will be highlighted in yellow.
Firefox (since version 75)
Since FF 75 it's ...
In practice, what are the main uses for the new “yield from” syntax in Python 3.3?
...rapper(reader())
for i in wrap:
print(i)
# Result
<< 0
<< 1
<< 2
<< 3
Instead of manually iterating over reader(), we can just yield from it.
def reader_wrapper(g):
yield from g
That works, and we eliminated one line of code. And probably the intent is a little ...
Multiple select statements in Single query
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edited Jul 6 at 13:51
DanB
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answered Nov 2...