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Getting started with F# [closed]
...t). (contains interactive tutorial walkthroughs)
Start by watching videos and presentations (BTW, An Introduction to Microsoft F# by Luca Bolognese is still one of the best presentations on the subject). Then read the following two must-read books:
Programming F#: A comprehensive guide for writin...
Using Razor, how do I render a Boolean to a JavaScript variable?
...u may also want to try:
isFollowing: '@(Model.IsFollowing)' === '@true'
and an ever better way is to use:
isFollowing: @Json.Encode(Model.IsFollowing)
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Postgres dump of only parts of tables for a dev snapshot
...roduction our database is a few hundred gigabytes in size. For development and testing, we need to create snapshots of this database that are functionally equivalent, but which are only 10 or 20 gigs in size.
...
Chrome Extension - Get DOM content
...s a sample extension that retrieves the DOM content on StackOverflow pages and sends it to the background page, which in turn prints it in the console:
background.js:
// Regex-pattern to check URLs against.
// It matches URLs like: http[s]://[...]stackoverflow.com[...]
var urlRegex = /^https?:\/\...
How to use the ProGuard in Android Studio?
This is my first project in Android Studio, and the code of my apps are not obfuscated.
Im using this configuration in build.gradle file:
...
CSS3 Continuous Rotate Animation (Just like a loading sundial)
...te an Apple style activity indicator (sundial loading icon) by using a PNG and CSS3 animation. I have the image rotating and doing it continuously, but there seems to be a delay after the animation has finished before it does the next rotation.
...
Why would I use a templating engine? jsp include and jstl vs tiles, freemarker, velocity, sitemesh
...er sort of logic - no possible option to drop down to using scriptlet tags and doing nasty things in your templates.
Placeholders - do velocity/freemaker give anything more than JSTL? In JSTL you put placeholder, and use the model (placed in request or session scope, by controllers) to fill th...
dplyr: “Error in n(): function should not be called directly”
...
I presume you have dplyr and plyr loaded in the same session. dplyr is not plyr. ddply is not a function in the dplyr package.
Both dplyr and plyr have the functions summarise/summarize.
Look at the results of conflicts() to see masked objects.
...
Safe (bounds-checked) array lookup in Swift, through optional bindings?
If I have an array in Swift, and try to access an index that is out of bounds, there is an unsurprising runtime error:
19 A...
Build tree array from flat array in javascript
I have a complex json file that I have to handle with javascript to make it hierarchical, in order to later build a tree.
Every entry of the json has :
id : a unique id,
parentId : the id of the parent node (which is 0 if the node is a root of the tree)
level : the level of depth in the tree
...