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Find nearest latitude/longitude with an SQL query
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SELECT latitude, longitude, SQRT(
POW(69.1 * (latitude - [startlat]), 2) +
POW(69.1 * ([startlng] - longitude) * COS(latitude / 57.3), 2)) AS distance
FROM TableName HAVING distance < 25 ORDER BY distance;
where [starlat] and [startlng] is the position where to start measur...
Reverting part of a commit with git
...orking tree but creates no commits, so if you really stuff up you can just start again with git reset --hard -- file/you/want/to/fix.ext.
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Are Git forks actually Git clones?
...it has much better support for forking the entire codebase and effectively starting a new project.
Git (not GitHub) natively supports "forking" an entire repo (ie, cloning it) in a couple of ways:
when you clone, a remote called origin is created for you
by default all the branches in the clone w...
How to exclude this / current / dot folder from find “type d”
can be used to find all directories below some start point. But it returns the current directory ( . ) too, which may be undesired. How can it be excluded?
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Why is it faster to check if dictionary contains the key, rather than catch the exception in case it
...marks like this show really large penalties for exceptions once your loops start including file or database activities throwing an exception on every iteration matters very little for performance. Compare 1st and 2nd table: codeproject.com/Articles/11265/…
– Dan Is Fiddli...
Returning a boolean from a Bash function
...nature operate on booleans" Erm, wat? "success codes" Wat? Sounds like you started with a pun you wanted to make and worked backward. If you gave me an opportunity to help you and I missed it, please clarify.
– Bruno Bronosky
Dec 18 '17 at 22:10
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Count number of matches of a regex in Javascript
...entations of dates a good place to quickly find some of the main problems. Start with an input string like this:
'12-2-2019 5:1:48.670'
and set up Paolo's function like this:
function count(re, str) {
if (typeof re !== "string") {
return 0;
}
re = (re === '.') ? ('\\' + re) : r...
Formula to determine brightness of RGB color
...d having higher sums be brighter, but I'm kind of at a loss as to where to start.
20 Answers
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Detect if called through require or directly by command line
...ngle name. Small adjustment: return require.main /*this is undefined if we started node interactively*/ && require.main.filename === callerModuleName;
– masterxilo
Feb 6 '18 at 10:43
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Focus-follows-mouse (plus auto-raise) on Mac OS X
...an move the mouse over to another window, scroll the text, and then when I start typing, the output goes to another application.
– Ocie Mitchell
May 7 '18 at 19:47
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