Enable CORS in .NET Core Web API

// Startup.cs

public void ConfigureServices(IServiceCollection services)
        // ...
        // ...

public void Configure(IApplicationBuilder app, IApiVersionDescriptionProvider provider)
        // ...
        // ...

readonly string MyAllowSpecificOrigins = "_myAllowSpecificOrigins";
private void CorsConfig(IApplicationBuilder app)
private void CorsConfig(IServiceCollection services)
    services.AddCors(options =>
        builder =>

basic angular requirements

npm install --save -g @angular/core
npm install --save -g zone.js
npm install --save -g rxjs
npm install --save -g hammerjs
npm install --save -g @angular/cli

edit git commit details

git rebase -i 0abc12def // <- the commit before the one that needs edit
// use vi to change "pick" to "edit" on the commit(s) that need edits, then write/quit
git commit --amend --author="Christopher Snay <email@email.com>"
// write/quit vi
git rebase --continue // <- repeat until all edited commits complete
git push -f

Angular setup

ng new projectname
cd projectname
sudo npm install --save @angular/material @angular/cdk @angular/animations
npm install hammerjs
ng generate component componentname
ng generate service servicename

build stand-alone w/ relative path

ng build --prod --base-href ./

Retrying (Retry(total=0, connect=None, read=None, redirect=None, status=None)) after connection broken by ‘SSLError(SSLError(1, u'[SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed (_ssl.c:726)’),)’: /simple/pylint/ >>>>>>>> Could not fetch URL https://pypi.python.org/simple/setuptools/: There was a problem confirming the ssl certificate: HTTPSConnectionPool(host=’pypi.python.org’, port=443): Max retries exceeded with url: /simple/setuptools/ (Caused by SSLError(SSLError(1, u'[SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed (_ssl.c:726)’),)) – skipping

// add the following flag to the pip command:

--trusted-host files.pythonhosted.org --trusted-host pypi.org

// or wherever the error indicates a problem in

HTTPSConnectionPool(host='pypi.python.org', port=443)

compare 2 files with Visual Studio

// open cmd
<<<path to Visual Studio\Common7\IDE>>>devenv /diff file1 file2

Or just create a batch file. Example:

@echo off
echo Drag and drop the first file onto this window. Then press [ENTER]
set /p file1=
echo Drag and drop the second file onto this window. Then press [ENTER]
set /p file2=
"C:\Program Files (x86)\Microsoft Visual Studio 11.0\Common7\IDE\devenv.exe" /diff %file1% %file2%