Tutorial by Examples: n

Normally, to remove files that are staged to be committed using the git reset commit, reset has a lot of functions depending on the arguments provided to it. To completely unstage all files staged, we can make use of git aliases to create a new alias that uses reset but now we do not need to remembe...

To create a patch, there are two steps. Make your changes and commit them. Run git format-patch <commit-reference> to convert all commits since the commit <commit-reference> (not including it) into patch files. For example, if patches should be generated from the latest two commit...

We can use git apply some.patch to have the changes from the .patch file applied to your current working directory. They will be unstaged and need to be committed. To apply a patch as a commit (with its commit message), use git am some.patch To apply all patch files to the tree: git am *.patch...

To list local branches that contain a specific commit or tag git branch --contains <commit> To list local and remote branches that contain a specific commit or tag git branch -a --contains <commit>

impl<K, V> Serialize for MyMap<K, V> where K: Serialize, V: Serialize { fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error> where S: Serializer { let mut state = serializer.serialize_map(Some(self.len()))?; ...

// A Visitor is a type that holds methods that a Deserializer can drive // depending on what is contained in the input data. // // In the case of a map we need generic type parameters K and V to be // able to set the output type correctly, but don't require any state. // This is an example of a...

In build.sbt, make sure you include (here for Mysql and PostGreSQL): "mysql" % "mysql-connector-java" % "5.1.20", "org.postgresql" % "postgresql" % "9.3-1100-jdbc4", "com.typesafe.slick" %% "slick" % "3.1.1&...

First, make your class comply with the UISearchResultsUpdating protocol. class MyTableViewController: UITableViewController, UISearchResultsUpdating {} Add the search controller property: class MyTableViewController: UTableViewController, UISearchResultsUpdating { let searchController = UI...

import { Component } from '@angular/core'; import { Router , ROUTER_DIRECTIVES} from '@angular/router'; import { NgForm } from '@angular/forms'; @Component({ selector: 'login', template: ` <h2>Login</h2> <form #f="ngForm" (ngSubmit)="login(f.value,f....

First, you have to request authorization of location services let locationManager = CLLocationManager() locationManager.delegate = self locationManager.requestWhenInUseAuthorization() // OR locationManager.requestAlwaysAuthorization() Then you can get all iBeacons' information inside didRange...

Sometimes you may want to perform some additional actions to Auto Layout calculations done by UIKit itself. Example: when you have a UIView that has a maskLayer, you may need to update maskLayer as soon as Auto Layout changes UIView's frame // CustomView.m - (void)layoutSubviews { [super la...

git log --pretty=oneline |wc -l

for k in `git branch -a | sed s/^..//`; do echo -e `git log -1 --pretty=format:"%Cgreen%ci %Cblue%cr%Creset" $k --`\\t"$k";done | sort

git ls-tree -r HEAD | sed -Ee 's/^.{53}//' | \ while read filename; do file "$filename"; done | \ grep -E ': .*text' | sed -E -e 's/: .*//' | \ while read filename; do git blame --line-porcelain "$filename"; done | \ sed -n 's/^author //p' | \ sort | uniq -c | sort -rn

To validate arguments to methods called on a mock, use the ArgumentCaptor class. This will allow you to extract the arguments into your test method and perform assertions on them. This example tests a method which updates the name of a user with a given ID. The method loads the user, updates the na...

NSURL *url = [NSURL URLWithString:@"http://www.example.com/images/apple-tree.jpg"]; NSString *fileName = [url lastPathComponent]; // fileName = "apple-tree.jpg"

Given a DataFrame: s1 = pd.Series([1,2,3]) s2 = pd.Series(['a','b','c']) df = pd.DataFrame([list(s1), list(s2)], columns = ["C1", "C2", "C3"]) print df Output: C1 C2 C3 0 1 2 3 1 a b c Lets add a new row, [10,11,12]: df = pd.DataFrame(np.array(...

Using the same example as Evaluating a NodeList in an XML document, here is how you would make multiple XPath calls efficiently: Given the following XML document: <documentation> <tags> <tag name="Java"> <topic name="Regular expression...

In this case, you want to have the expression compiled before the evaluations, so that each call to evaluate does not compile the same expression. The simple syntax would be: XPath xPath = XPathFactory.newInstance().newXPath(); //Make new XPath XPathExpression exp = xPath.compile("/documentat...

Shortcode is a small piece of code that can be added into the WordPress editor and will output something different once the page is published or previewed. Frequently, shortcodes are added to the theme functions.php file, but that's not a good practice as shortcodes are expected to keep working aft...