Tutorial by Examples: u

interface Mockable { bool DoSomething(); } var mock = new Mock<Mockable>(); mock.Setup(x => x.DoSomething()).Returns(true); var result = mock.Object.DoSomething(); //true
Helper functions are used in conjunction with select to identify variables to return. Unless otherwise noted, these functions expect a string as the first parameter match. Passing a vector or another object will generate an error. library(dplyr) library(nycflights13) starts_with starts_with al...
One needs the predicted probabilities in order to calculate the ROC-AUC (area under the curve) score. The cross_val_predict uses the predict methods of classifiers. In order to be able to get the ROC-AUC score, one can simply subclass the classifier, overriding the predict method, so that it would a...
We need to use tag <ui:remove> and </ui:remove> between any JSF code that we want to comment it. <ui:remove> <h:outputLabel value="Yeah, I'm really commented" /> </ui:remove> Of course you need add this xmlns to your header html tag. Check this minim...
You must to add to web.xml a configuration tag like this: <context-param> <param-name>facelets.SKIP_COMMENTS</param-name> <param-value>true</param-value> </context-param> Now you can use normal HTML comments tag <!-- and --> <!-- <...
In Apache Spark while doing shuffle operations like join and cogroup a lot of data gets transferred across network. Now, to control the number of partitions over which shuffle happens can be controlled by configurations given in Spark SQL. That configuration is as follows: spark.sql.shuffle.partiti...
Java expressions are evaluated following the following rules: Operands are evaluated from left to right. The operands of an operator are evaluated before the operator. Operators are evaluated according to operator precedence Argument lists are evaluated from left to right. Simple Example I...
git filter-branch --force --index-filter \ 'git rm --cached --ignore-unmatch PATH-TO-YOUR-FILE-WITH-SENSITIVE-DATA' \ --prune-empty --tag-name-filter cat -- --all Add your file with sensitive data to .gitignore to ensure that you don't accidentally commit it again. echo "YOUR-FILE-WITH-SE...
BFG Repo cleaner is an alternative to git filter-branch. It can be used to remove sensitive data or large files that were committed wrongly like binaries compiled from the source. It is written in Scala. Project website: BFG Repo Cleaner Requirements The Java Runtime Environment (Java 7 or above ...
Objects become eligible for garbage collection (GC) if they are no longer reachable by the main entry point(s) in a program. GC is usually not performed explicitly by the user, but to let the GC know an object is no longer needed a developer can: Dereference / assign null someFunction { var ...
When interfacing with C APIs, one might want to back off Swift reference counter. Doing so is achieved with unmanaged objects. If you need to supply a type-punned pointer to a C function, use toOpaque method of the Unmanaged structure to obtain a raw pointer, and fromOpaque to recover the original ...
getFirstName() - returns the context user's first name. getLastName() - returns the context user's last name.
self.view.backgroundColor = [UIColor colorWithPatternImage:[UIImage imageNamed:@"Background.png"]];
1- Define Your own custom Block typedef void(^myCustomCompletion)(BOOL); 2- Create custom method which takes your custom completion block as a parameter. -(void) customMethodName:(myCustomCompletion) compblock{ //do stuff // check if completion block exist; if we do not check it will ...
Flags gulp has very few flags to know about. All other flags are for tasks to use if needed. -v or --version will display the global and local gulp versions --require <module path> will require a module before running the gulpfile. This is useful for transpilers but also has other applica...
Resource loading in Java comprises the following steps: Finding the Class or ClassLoader that will find the resource. Finding the resource. Obtaining the byte stream for the resource. Reading and processing the byte stream. Closing the byte stream. The last three steps are typically accomp...
To use typescript with react in a node project, you must first have a project directory initialized with npm. To initialize the directory with npm init Installing via npm or yarn You can install React using npm by doing the following: npm install --save react react-dom Facebook released its ow...
VueJS can be used to easily handle user input as well, and the two way binding using v-model makes it really easy to change data easily. HTML : <script src="https://unpkg.com/vue/dist/vue.js"></script> <div id="app"> {{message}} <input v-model="...
Campaign Monitor built a nifty tool that generates code for buttons in HTML email. It uses a cominbation os CSS and VML (for Microsoft Outlook) to display background images or patterns in most major email clients. <div><!--[if mso]> <v:roundrect xmlns:v="urn:schemas-microsoft...
This technique relies on padding at the table cell level to structure the button, and both HTML attributes and CSS to style the button. No VML means simpler code, but no background images in Outlook. <table width="100%" border="0" cellspacing="0" cellpadding="0...

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