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How to convert a column number (e.g. 127) into an Excel column (e.g. AA)
...was missing the left-most letter and it was building the string in reverse order - all now fixed.
Bugs aside, the algorithm is basically converting a number from base 10 to base 26.
Update 2: Joel Coehoorn is right - the code above will return AB for 27. If it was real base 26 number, AA would be ...
HTML5 Canvas Resize (Downscale) Image High Quality?
...n of the input pixels is right inside a destination pixels, overlaps an X border, an Y border, or both.
( A scheme would be nice here, but i don't have one. )
Here's an example of canvas scale vs my pixel perfect scale on a 1/3 scale of a zombat.
Notice that the picture might get scaled in your ...
Pass props to parent component in React.js
...omparison check.
You can also use Recompose library, which provide higher order components to achieve fine-tuned optimisations:
// A component that is expensive to render
const ExpensiveComponent = ({ propA, propB }) => {...}
// Optimized version of same component, using shallow comparison of ...
Convert Unicode to ASCII without errors in Python
...tf8' codec can't decode byte 0x8b in position 1: unexpected code byte
In order to decode a gzpipped response you need to add the following modules (in Python 3):
import gzip
import io
Note: In Python 2 you'd use StringIO instead of io
Then you can parse the content out like this:
response = u...
Business logic in MVC [closed]
... The business rules / logic part is a bit tricky to explain. In order to start any data-processing you call a method from one of your services. That means you basically start a transaction. If this method contains the business logic than it is called a "transaction script". That's usually...
What is the explanation for these bizarre JavaScript behaviours mentioned in the 'Wat' talk for Code
...s value, otherwise continue
Throw a TypeError
Note: For date values, the order is to invoke toString before valueOf.
If any operand value is a string, then do a string concatenation
Otherwise, convert both operands to their numeric value and then add these values
Knowing the various coercion v...
Java 8 Iterable.forEach() vs foreach loop
... but "join" doesn't really seem like something that can be exexuted out-of order.
– Eugene Loy
May 19 '13 at 14:18
...
JavaScript variables declare outside or inside loop?
...and the previous 2 are only ~2 seconds. Very repeatably and regardless of order.
So, this proves to me, that one should always declare the vars outside of the loop. Curious case to me is the first one where I declare i in the for() statement. This one appears to be just as fast as the 2nd test w...
Stacked Tabs in Bootstrap 3
...> .nav-tabs,
.tabs-right > .nav-tabs,
.tabs-left > .nav-tabs {
border-bottom: 0;
}
.tab-content > .tab-pane,
.pill-content > .pill-pane {
display: none;
}
.tab-content > .active,
.pill-content > .active {
display: block;
}
.tabs-below > .nav-tabs {
border-top: 1px ...
User recognition without cookies or local storage
...ually User1 or User2? And which of those two matches is most probable?
In order to effectively answer this question, you need to understand Frequency vs Probability Format and why Joint Probability might be a better approach. The details are too much to get into here (which is why I'm giving you li...