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Create an index on a huge MySQL production table without table locking
...kes some time to prepare the script, and I usually having to create a .sql file containing the raw SQL change and a .sh file as wrapper to run the same SQL but in fragment format (no ALTER TABLE). You can run multiple commands with pt-online-schema-change by stringing them up and separated by comma...
Express-js wildcard routing to cover everything under and including a path
...re is a fully working example, feel free to copy and paste this into a .js file to run with node, and play with it in a browser (or curl):
const app = require('express')()
// will be able to match all of the following
const test1 = 'http://localhost:3000/hello/world'
const test2 = 'http://localhost...
How to convert lazy sequence to non-lazy in Clojure
... was trying to map a function over a vector and then spit the results to a file, and even after calling doall, the file contained "clojure.lang.LazySeq@address" instead of the contents of the sequence. Calling vec on value map returned got me what I needed to spit out to the file.
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Iterate two Lists or Arrays with one ForEach statement in C#
...come a problem, e.g. if it is used with enumerables over the lines of open files.
– Lii
Mar 9 '15 at 14:59
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AngularJS performs an OPTIONS HTTP request for a cross-origin resource
...th a cross-origin resource where the asset host which delivers my template files is on a different domain and therefore the XHR request that angular performs must be cross-domain. I've added the appropriate CORS header to my server for the HTTP request to make this work, but it doesn't seem to work....
class method generates “TypeError: … got multiple values for keyword argument …”
...oodo('something', thing='everything')
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
TypeError: foodo() got multiple values for keyword argument 'thing'
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Rebuild IntelliJ project indexes
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File -> Invalidate caches...
(Force rebuild of all caches and indices on next startup)
Restart IntelliJ IDEA.
Caution: This might Remove local history.
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node.js child process - difference between spawn & fork
...continuous data buffer in binary/encoding format , Eg - Transfer 1gb video file,image,log files in ONE TIME
fork will be useful when you want to do messaging
Eg - JSON or XML data messaging
Conslusion
spawn should be used for streaming big data/files/images FROM spawn process TO parent process ...
What's a correct and good way to implement __hash__()?
...pedia also has a summary of various collision resolution methods:
Also, "File Organization And Processing" by Tharp covers alot of collision resolution methods extensively. IMO it's a great reference for hashing algorithms.
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Convert integer to string Jinja
...ers. Btw, in my case I've got integers as strings coming from JSON content files: "hero_title_img_w": "111" and "hero_title_img2_w": "222". Then I'm adding them in .NJK file: {{ hero_title_img_w|int + hero_title_img2_w|int }} to use as image's width attribute. Hope it helps somebody one day.
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