Tutorial by Examples: b

In the early forms of Fortran the only mechanism for creating global variable store visible from subroutines and functions is to use the COMMON block mechanism. This permitted sequences of variables to be names and shared in common. In addition to named common blocks there may also be a blank (unna...
Following example shows steps involved in initializing a view from XIB. This is not a complex operation but exact steps need to be followed in order to do it right way first time, avoiding exceptions. How does loadNibNamed Works Main steps are: Create XIB Create class .h and .m Define outlet...
One of the easier steps is adding the appcache. Appcache will allow your application content to load even when there is no internet access. You won't be able to get any data from your mongo servers, but the static content and assets will be available offline. meteor add appcache
Finally, we want to get some of our dynamic data to be stored offline. meteor add ground:db Lists = new Meteor.Collection("lists"); GroundDB(Lists); Todos = new Meteor.Collection("todos") GroundDB(Todos);
The appcache will cause some confusion in your development workflow, because it hides Meteor's auto-updating features. When you turn off the server component of your app, the client portion in your browser will continue working. This is a good thing! But, you don't get the immediate feedback that ...
The first step to logging is simply to run Meteor from the shell, and you'll get the server logs in the command console. meteor The next step is to pipe the contents of std_out and std_err to a logfile, like so: meteor > my_app_log.log 2> my_app_err.log
The following example is from 0.5 - 0.7 days, and illustrates how to log an error when the database hasn't populated the client side cursor yet. Template.landingPage.postsList = function(){ try{ return Posts.find(); }catch(error){ //color code the error (red) console.error(erro...
Logging can often clutter up the console, so it's common to define log levels to control what detail of data is getting logged. A common pattern is to specify a log level variables. var DEBUG = false; var TRACE = false; Template.landingPage.events({ 'click .selectItemButton':function(){ ...
Some teams find that they want to leave console log statements in their code, but not have them display in production. They will override the logging functions if a variable isn't set (possibly an environment variable). Additionally, this may qualify as a security feature in some situations. if (...
One favored approach to deploying to a server is to use Git or GitHub. This basically involves logging into your server, moving to the directory you want to run your app from, then cloning your files directly from GitHub. You then build your app on the server. This approach ensures that platform spe...
Alternatively, you may want to build your application, and then deploy it.. cd myapp meteor build --directory ../output cd .. scp output -r username@destination_host:/var/www/myapp-production
Both Chrome and Safari have built in debuggers. With Chrome, all you have to do is right-click on a web page and 'Inspect Element'. With Safari, you'll have to go into Preferences > Advanced and click on 'Show Develop menu in menu bar'. With Firefox, you'll need to install Firebug
You'll need to add debugger statements to your code: Meteor.methods({ doSomethingUself: function(){ debugger; niftyFunction(); } });
For server side debugging, you'll need to use a tool like Node Inspector. Before you get started, check out some of these useful tutorials. HowToNode - Debugging with Node Inspector Strongloop - Debugging Applications Easily Debugging Meteor.js Walkthrough with Screenshots of Using Node Inspecto...
Besides Node Inspector, some people have reported success with a npm utility called debug. MeteorHacks - Debugging Meteor with npm debug
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layout_text_to_speech.xml <?xml version="1.0" encoding="utf-8"?> <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent" android:layout_height="match_parent" android:pad...
Ensure that you install the correct npm dependencies (babel decided to split itself into a bunch of packages, something to do with "peer dependencies"): npm install webpack webpack-node-externals babel-core babel-loader babel-preset-react babel-preset-latest --save webpack.config.js: mo...
To delete some lines of text when you don't know exact number of lines to delete, you try 10dd , 5dd , 3dd until you remove all the lines. Relative line numbers solves this problem, suppose we have a file containing : sometimes, you see a block of text. You want to remove it but you cannot d...
The following command executes :command on lines 23 to 56: :23,56command NB: Ranges are inclusive by default.

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