| static LinearGradient getGradient(Color color, double ratio, double sign) { | |
| return LinearGradient( | |
| colors: [ | |
| color.withOpacity(ratio * 1.0), | |
| color.withOpacity(ratio * 0.30), | |
| color.withOpacity(ratio * 0.10), | |
| ], | |
| stops: [ | |
| 0.012, | |
| 0.012, |
Note: When creating widgets in column / row, if the size is too big (like when presenting in a modal screen) use the attribute: mainAxisSize.min to contain the widget
Use Spacer when you want to create space using a flex property. Use SizedBox when you want to create space using a specific number of logical pixels.
| String s = "😀 hello"; | |
| s.runes.forEach((int i){ | |
| String x = String.fromCharCode(i); // Get emoji as 1 string and now 2 CodePoints | |
| } |
setInterval and clearInterval are top level functions part of JavaScript
What does that mean?
Basically these functions are defined by the window object. You can either call this function like window.setInterval( ... ) or just setInterval( ... )
setinterval is used to call any function again and again every few milliseconds.
It takes 2 parameters: the function to call periodically and what the duration between the calls is. So for example:
| pragma solidity ^0.4.17; | |
| contract SimpleStorage { | |
| uint storedData; | |
| function set(uint x) public { | |
| storedData = x; | |
| } | |
| function get() public view returns (uint) { |
So far what we have learnt is about developing apps. But in a company software development is only part of the story, the other part is Software Delivery. This is where DevOps, Infrastructure Engineering etc roles come in.
When you have no devops, you have a person doing the following:
