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Error while installing json gem 'mkmf.rb can't find header files for ruby'
...
For Xcode 11 on macOS 10.14, this can happen even after installing Xcode and installing command-line tools and accepting the license with
sudo xcode-select --install
sudo xcodebuild -license accept
The issue is that Xcode 11 ships the macOS 10.15 SDK which in...
Find substring in the string in TWIG
...possible to use this inside an if statement?
– TeaCupApp
Oct 28 '12 at 0:36
3
Yes, indeed, you ca...
Ternary operator in AngularJS templates
... set to true inside an ng-repeat for the first element, so the above would apply class 'myClass1' and 'myClass2' only the first time through the loop.
With ng-class there is an easier way though: ng-class takes an expression that must evaluate to one of the following:
a string of space-delimited...
How Do I Take a Screen Shot of a UIView?
I am wondering how my iPhone app can take a screen shot of a specific UIView as a UIImage .
15 Answers
...
How to establish a connection pool in JDBC?
...onfigured and usable pooled DataSource
But if you are running inside an application server, I would recommend to use the built-in connection pool it provides. In that case, you'll need to configure it (refer to the documentation of your application server) and to retrieve a DataSource via JNDI:
...
Representing Directory & File Structure in Markdown Syntax [closed]
...
I followed an example in another repository and wrapped the directory structure within a pair of triple backticks (```):
```
project
│ README.md
│ file001.txt
│
└───folder1
│ │ file011.txt
│ │ file012.txt
│ │
│ └───subf...
iOS change navigation bar title font and color
...is works with no problem when only one NavBar is in the view
hierarchy. It appears that secondary NavBars in the same stack are ignored. (Note that if you show the master navigation controller's navBar all the other custom navBar settings are ignored).
Gotchas (deux)
Some of these are repeated wh...
How to read from stdin line by line in Node
...I need the stdout. I left it out of my question, but I'm trying to get the app to be usable as node app.js < input.txt > output.txt.
– Matt R. Wilson
Nov 20 '13 at 4:50
...
What is the purpose of backbone.js?
...ntroller that in this case allows you to save the state of your Javascript application via a hashbang URL, for example: http://twitter.com/#search?q=backbone.js
Some pros that I discovered with Backbone:
No more Javascript Spaghetti: code is organized and broken down into semantically meaningful...
OAuth: how to test with local URLs?
...r_callback] and register the shortened URL as the callback in your Twitter app.
This should be easier than fiddling around in the .hosts file.
Note that now (Aug '14) bit.ly is not allowing link forwarding to localhost; however Google link shortener works.
PS edit: (Nov '18): Google link shortener ...