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mysql update column with value from another table
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432
In addition to this answer if you need to change tableB.value according to tableA.value dynami...
How can I specify a branch/tag when adding a Git submodule?
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edited Jul 2 '19 at 21:43
Julius Smith
322 bronze badges
answered Nov 22 '09 at 9:19
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What is in your Mathematica tool bag? [closed]
...e one liner:
SelectEquivalents[hamlst,
#[[;; 3]] &,
#[[{4, 5}]] -> (Complex @@ #[[6 ;;]]) &,
{#1, SparseArray[#2]} &]
Honestly, this is my Swiss Army Knife, and it makes complex things very simple. Most of my other tools are somewhat domain specific, so I'll p...
Evenly distributing n points on a sphere
...answer here (and using Python):
> cat ll.py
from math import asin
nx = 4; ny = 5
for x in range(nx):
lon = 360 * ((x+0.5) / nx)
for y in range(ny):
midpt = (y+0.5) / ny
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Is there a JavaScript / jQuery DOM change listener?
...ilable solution, but they have been deprecated for performance reasons. DOM4 Mutation Observers are the replacement for deprecated DOM3 mutation events. They are currently implemented in modern browsers as MutationObserver (or as the vendor-prefixed WebKitMutationObserver in old versions of Chrome)...
How can I round down a number in Javascript?
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428
Using Math.floor() is one way of doing this.
More information: https://developer.mozilla.org/...
Sequelize.js delete query?
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243
For anyone using Sequelize version 3 and above, use:
Model.destroy({
where: {
// c...
Placement of the asterisk in pointer declarations
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4, 5, and 6 are the same thing, only test is a pointer. If you want two pointers, you should use:
int *test, *test2;
Or, even better (to make everything clear):
int* test;
int* test2;
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How do I specify local .gem files in my Gemfile?
...SHA-1 ref
gem "foreman", git: "git://github.com/pje/foreman.git", ref: "bf648a070c"
# ...or branch
gem "foreman", git: "git://github.com/pje/foreman.git", branch: "jruby"
# ...or tag
gem "foreman", git: "git://github.com/pje/foreman.git", tag: "v0.45.0"
(As @JHurrah mentioned in his comment.)
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Recursively counting files in a Linux directory
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1384
This should work:
find DIR_NAME -type f | wc -l
Explanation:
-type f to include only files....