If you are using CircleCI for tag-based deployments, you may want to prevent more than 1 deployment happening at once. This code snippet allows you to check within a pipeline whether another pipeline triggered by a Git tag using the same workflow is currently running. Because the list of pipelines does not show you which workflow they are using, we are assuming that there is only a single tag...
Use CORS for REST API via XDomain proxy in IE8, IE9 for JavaScript/Angular
Because Internet Explorer 8 and 9 don’t support CORS properly (no custom headers such as an API key, only GET/POST, etc.) you may have problems using a modern REST API. However Jaime Pillora came up with a great solution called XDomain which acts as a pure JavaScript proxy for your API calls to get around CORS. This will only work if you have control over both the API you’re consuming...