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MySQL Great Circle Distance (Haversine formula)
...n lat/lon so the bounding boxing can help the search instead of slowing it down (the index is already added in the CREATE TABLE query above).
INDEX `lat_lon_idx` (`lat`, `lon`)
Given an old table with only lat/lon coordinates, you can set up a script to update it like this: (php using meekrodb)
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How to find list of possible words from a letter matrix [Boggle Solver]
...ked this against John Fouhy's solution.) After setup, the time to solve is down in the noise.
grid = "fxie amlo ewbx astu".split()
nrows, ncols = len(grid), len(grid[0])
# A dictionary word that could be a solution must use only the grid's
# letters and have length >= 3. (With a case-insensitiv...
What is the string length of a GUID?
...ytes in length.
If you must store it as a string, the length really comes down to how you choose to encode it. As hex (AKA base-16 encoding) without hyphens it would be 32 characters (two hex digits per byte), so char(32).
However, you might want to store the hyphens. If you are short on space, bu...
Is it possible to forward-declare a function in Python?
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Great tip; really helps me; as I much more prefer "top-down" programming versus bottom up.
– GhostCat
Aug 13 '15 at 11:43
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How do I duplicate a whole line in Emacs?
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I use
C-a C-SPACE C-n M-w C-y
which breaks down to
C-a: move cursor to start of line
C-SPACE: begin a selection ("set mark")
C-n: move cursor to next line
M-w: copy region
C-y: paste ("yank")
The aforementioned
C-a C-k C-k C-y C-y
amounts to the same thing (TMT...
How to declare an array in Python?
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I see some down votes for this post time to time. It would be great if someone could post a word why. Thanks.
– Anton
Oct 31 '16 at 12:29
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CSS fixed width in a span
...be a block element because rest of the text in between li elements will go down. Also using float is very bad idea because you will need to set width for whole li element and this width will need to be the same as width of whole ul element or other container.
Try something like this in html:
<l...
How to find topmost view controller on iOS
...ntioned the navigation controller as being on top, which implies the grows-downward view.
– Wilbur Vandrsmith
Jan 28 '12 at 0:42
51
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How to retrieve the current value of an oracle sequence without increment it?
...wer. I have to use this inside Boomi and was looking for a solution up and down
– learning...
Jan 22 at 2:03
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How to bring back “Browser mode” in IE11?
...kes you to the modern.ie website. The point of this is to encourage you to download the VMs that MS are supplying for us to test our sites using real copies of each version of IE. This will give you a much more accurate testing experience, and is strongly enouraged as a much better practice than tes...