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Ruby on Rails: How do I add placeholder text to a f.text_field?

...to my f.text_field fields so that the text comes pre-written by default, and when a user click inside the fields, the text goes away - allowing the user to type in the new text? ...
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“Submit is not a function” error in JavaScript

...submit button or some other element submit. Rename the button to btnSubmit and your call will magically work. When you name the button submit, you override the submit() function on the form. share | ...
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How to get Sinatra to auto-reload the file after each change?

...load on changes?" First off, in-process code reloading in Ruby is hard and having a solution that works for every scenario is technically impossible. Which is why we recommend you to do out-of-process reloading. First you need to install rerun if you haven’t already: $ gem instal...
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Are there any suggestions for developing a C# coding standards / best practices document? [closed]

... 'adopter' in the department) to create a basic (read useful?) C# coding standards document. 26 Answers ...
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Searching if value exists in a list of objects using Linq

... Because not all collections have Exists, and it does not take a lambda expression, but rather the object we are looking for itself. – zvolkov Jul 9 '14 at 12:10 ...
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Detecting iOS / Android Operating system

I've done some research, and this question has come up, but not in the way I intend. I'm building a page for a client that is a QR code landing, which is a place to download an application. So he doesn't have to print out 2 QR codes on a page, I'd like to detect the current operating system (Apple...
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how to remove X-Powered-By in ExpressJS [duplicate]

I want to remove X-Powered-By for Security,Save Bandwidth in ExpressJS(node.js). how to do it? it could be filter(app.use) ? ...
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Team Build Error: The Path … is already mapped to workspace

... Use the command line utility TF - Team Foundation Version Control Tool (tf). You can get a list of all workspaces by bringing up a Visual Studio Command Prompt then changing to your workspace folder and issuing the following commands: ...
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git push says “everything up-to-date” even though I have local changes

I have a remote gitosis server and a local git repository, and each time I make a big change in my code, I'll push the changes to that server too. ...
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Multiple HttpPost method in Web API controller

...fine the following routes in WebApiConfig file. // Controller Only // To handle routes like `/api/VTRouting` config.Routes.MapHttpRoute( name: "ControllerOnly", routeTemplate: "api/{controller}" ); // Controller with ID // To handle routes like `/api/VTRouting/1` config.Rou...