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What is the significance of initializing direction arrays below with given values when developing ch
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This is a technique to encode all directions as arrays - every pair of di[i],dj[i] is a different direction.
If we imagine we have a piece at a location x,y, and we want to add onto its x and its y value to move it to a nearby location, 1,0 is east, -1,0...
Strange, unexpected behavior (disappearing/changing values) when using Hash default value, e.g. Hash
...ere’s a hint:
h[42] #=> ["a", "b"]
The array returned by each [] call is just the default value, which we’ve been mutating all this time so now contains our new values. Since << doesn’t assign to the hash (there can never be assignment in Ruby without an = present†), we’ve nev...
Best way to convert text files between character sets?
... of these arguments. They will default to your current locale, which is usually UTF-8.
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Browser doesn't scale below 400px?
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Chrome cannot resize horizontally below 400px (OS X) or 218px (Windows) but I have a really simple solution to the problem:
Dock the web inspector to the right instead of to the bottom
Resize the inspector panel - you can now make the browser area real...
How to create a drop shadow only on one side of an element?
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}
<div id="box" class="box-shadow"></div>
UPDATE 3
All my previous answers have been using extra markup to get create this effect, which is not necessarily needed. I think this a much cleaner solution... the only trick is playing around with the values to get the right positi...
What does the “~” (tilde/squiggle/twiddle) CSS selector mean?
...ter .a in HTML source order.
Likewise, .check:checked ~ .content matches all .content elements that are siblings of .check:checked and appear after it.
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Working with huge files in VIM
I tried opening a huge (~2GB) file in VIM but it choked. I don't actually need to edit the file, just jump around efficiently.
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onMeasure custom view explanation
...ls, but each one is a little bit different than the other. Sometimes they call super.onMeasure at the end, sometimes they use setMeasuredDimension and didn't call it. Where is a difference?
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Make Div overlay ENTIRE page (not just viewport)?
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The viewport is all that matters, but you likely want the entire website to stay darkened even while scrolling. For this, you want to use position:fixed instead of position:absolute. Fixed will keep the element static on the screen as you sc...
Difference between 3NF and BCNF in simple terms (must be able to explain to an 8-year old)
...in BCNF because there is no column (either key or non-key) that is functionally dependent on anything besides that key.
Because each pizza must have exactly one of each topping type, we know that (Pizza, Topping Type) is a candidate key. We also know intuitively that a given topping cannot belong ...