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Rake just one migration

...and on what Ryan says, if the table has been dropped from the database outside of Rails, rake db:migrate:up VERSION=my_version may do nothing, because the schema_migrations table still says it is has been run. In the same situation rake db:migrate:redo VERSION=my_version may fail because it cannot d...
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Position an element relative to its container

...ike to create the bars using DIVs with background colors and percentage widths depending on the values I want to graph. I also want to have a grid lines to mark an arbitrary position along the graph. ...
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DBMS_OUTPUT.PUT_LINE not printing

... even its not working .. Please provide any other alternative – Lova Chittumuri Aug 10 '19 at 18:12 ...
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How do I toggle an element's class in pure JavaScript?

...'.menu') // Using a class instead, see note below. menu.classList.toggle('hidden-phone'); As an aside, you shouldn't be using IDs (they leak globals into the JS window object). share | improve thi...
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How to put a delay on AngularJS instant search?

...uld be to switch the binding so that you have a $scope property defined inside your Controller on which your filter operates. That way you can control how frequently that $scope variable is updated. Something like this: JS: var App = angular.module('App', []); App.controller('DisplayController', ...
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How do I get the current time only in JavaScript

...urrent time efficiently using javascript I couldn't find a solution that did exactly what I needed. I wanted clean and tiny code so I came up with this: (Set once in your master.js and invoke when required.) PURE JAVASCRIPT function timeNow(i) { var d = new Date(), h = (d.getHours()&...
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Is it smart to replace boost::thread and boost::mutex with c++11 equivalents?

Motivation: reason why I'm considering it is that my genius project manager thinks that boost is another dependency and that it is horrible because "you depend on it"(I tried explaining the quality of boost, then gave up after some time :( ). Smaller reason why I would like to do it is that I would...
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Run java jar file on a server as background process

... Thanks Anton,currntly im stopping the server by killing the process id.i don't think it's best practice.is thery command to to stop the server? – Bernad Ali Aug 25 '12 at 5:01 ...
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.NET HttpClient. How to POST string value?

....Collections.Generic; using System.Net.Http; class Program { static void Main(string[] args) { Task.Run(() => MainAsync()); Console.ReadLine(); } static async Task MainAsync() { using (var client = new HttpClient()) { client.BaseAd...
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Is there an Eclipse line-width marker?

...t is a vertical line to be drawn in the editor showing where the max line width while I am typing, not just when I run the formmater. I know this feature is available in some capacity because it is displayed in the code formatter property page. ...