All of the below properties or methods, when requested/called in JavaScript, will trigger the browser to synchronously calculate the style and layout*. This is also called reflow or layout thrashing, and is common performance bottleneck.
Generally, all APIs that synchronously provide layout metrics will trigger forced reflow / layout. Read on for additional cases and details.
elem.offsetLeft, elem.offsetTop, elem.offsetWidth, elem.offsetHeight, elem.offsetParent
| """Rolling time window counter and rate limit using Redis. | |
| Use Redis sorted sets to do a rolling time window counters and limiters. These are useful for preventing denial of service, flood and reputation attack against site elements which trigegr outgoing action (email, SMS). | |
| Example how to do a Colander validator which checks that the form has not been submitted too many times within the time period:: | |
| import colander as s | |
| @c.deferred | |
| def throttle_invites_validator(node, kw): |
| var Col = require('react-bootstrap/lib/Col') | |
| var PageHeader = require('react-bootstrap/lib/PageHeader') | |
| var React = require('react') | |
| var Row = require('react-bootstrap/lib/Row') | |
| var {connect} = require('react-redux') | |
| var {reduxForm} = require('redux-form') | |
| var DateInput = require('./DateInput') | |
| var FormField = require('./FormField') | |
| var LoadingButton = require('./LoadingButton') |
| // returns a list of all elements under the cursor | |
| // | |
| function elementsFromPoint(x,y) { | |
| var elements = [], previousPointerEvents = [], current, i, d; | |
| if(typeof document.elementsFromPoint === "function") | |
| return document.elementsFromPoint(x,y); | |
| if(typeof document.msElementsFromPoint === "function") | |
| return document.msElementsFromPoint(x,y); | |
| B A S H C H E A T S H E E T | |
| to page output forward (only): command filename | more | |
| to page output forward & back: command filename | less | |
| to print a dataset: lp datasetname (-d printerid) (-o landscape) | |
| USE OF QUOTATION MARKS | |
| echo "$varname" = echo The value of \$varname is \"$varname\" | |
| = echo "The value of \$varname is \"$varname\"." | |
| $fred='Four spaces between these words.' |
By James O Coplien from http://rbcs-us.com/documents/Why-Most-Unit-Testing-is-Waste.pdf
Unit testing was a staple of the FORTRAN days, when a function was a function and was sometimes worthy of functional testing. Computers computed, and functions and procedures represented units of computation. In those days the dominant design process composed complex external functionality from smaller chunks, which in turn orchestrated yet smaller chunks, and so on down to the level of well-understood primitives. Each layer supported the layers above it. You actually stood a good chance that you could trace the functionality of the things at the bottom, called functions and procedures, to the requirements that gave rise to them out at the human interface. There was hope that a good designer could understand a given function’s business purpose. And it was possible, at least in well-structured code, to reason about the calling tree. You could mentally simulate
| local ffi = require("ffi") | |
| local awesome = ffi.load("./awesome.so") | |
| ffi.cdef([[ | |
| typedef long long GoInt64; | |
| typedef unsigned long long GoUint64; | |
| typedef GoInt64 GoInt; | |
| typedef GoUint64 GoUint; | |
| typedef double GoFloat64; |
| // ==UserScript== | |
| // @name VKDownloadMedia | |
| // @description Скачать фото/аудио/видео-файлы с соц. сети ВКонтакте. | |
| // @namespace https://github.com/KJ86/VKDownloadMedia | |
| // @version 5.5 | |
| // @date 2018-04-10 | |
| // @author KJ86 | |
| // @icon data:image/svg+xml;base64,PHN2ZyB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciIHdpZHRoPSIyNCIgaGVpZ2h0PSIyNCIgdmlld0JveD0iMCAwIDI0IDI0Ij48cGF0aCBmaWxsPSIjODI4YTk5IiBkPSJtIDEwLDYgaCA0IHYgNiBoIDMgbCAtNSw2IC01LC02IGggMyB6IiBwYWludC1vcmRlcj0ibWFya2VycyBzdHJva2UgZmlsbCIvPjwvc3ZnPg== | |
| // @homepage https://greasyfork.org/ru/scripts/7385-vkdownloadmedia | |
| // @downloadURL https://greasyfork.org/scripts/7385-vkdownloadmedia/code/VKDownloadMedia.user.js |
| Programming Language Checklist | |
| by Colin McMillen, Jason Reed, and Elly Jones. | |
| Odin language | |
| [x] - yes | |
| [~] - maybe | |
| [?] - unknown | |
| [text] specific answer |
