Tutorial by Examples: g

See remarks for discussion of closures. Suppose we have an interface: public interface IMachine<TState, TInput> { TState State { get; } public void Input(TInput input); } and then the following is executed: IMachine<int, int> machine = ...; Func<int, int> machineC...

Introduction Texas Instruments' (TI) CC26XX series SoCs are readily available wireless MCUs targeting Bluetooth Low Energy (BLE) applications. Along with the MCUs, TI offers a full-fledged software stack that provides necessary API and sample codes to help quickly get developers started with the to...

load($id); // or load it by SKU // $sku = "microsoftnatural"; // $_product = Mage::getModel('catalog/product')->loadByAttribute('sku', $sku); $stock = Mage::getModel('cataloginventory/stock_item')->loadByProduct($_product); print_r($stock->getData()); echo $stoc...

override func viewDidLoad() { super.viewDidLoad() NotificationCenter.default.addObserver(self, selector: Selector(("batteryStateDidChange:")), name: NSNotification.Name.UIDeviceBatteryStateDidChange, object: nil) NotificationCenter.default.addObserver(self, selector: Selecto...

Go to the directory with the source code: cd freebsdsrc Go to the directory with the kernel's configuration code: # If your system is 32-bit. cd sys/i386/conf/ # If your system is 64-bit. cd sys/amd64/conf/ Get a copy of the GENERIC kernel (let's call it MODEDKERNEL). It will ...

Let's configure the destination directory for the root filesystem of your new FreeBSD (for example /usr/home/beastie/MODEDKERNEL). Add the following lines to /etc/src.conf to set it up: .if ${KERNCONF} == "MODEDKERNEL" DESTDIR?=/usr/home/beastie/MODEDKERNEL MODULES_OVERRID...

Spring is a framework, which provides bunch of classes, by using this we don't need to write boiler plate logic in our code, so Spring provides an abstract layer on J2ee. For Example in Simple JDBC Application programmer is responsible for Loading the driver class Creating the connection Cre...

What happens when we execute python -m SimpleHTTPServer 9000? To answer this question we should understand the construct of SimpleHTTPServer (https://hg.python.org/cpython/file/2.7/Lib/SimpleHTTPServer.py) and BaseHTTPServer(https://hg.python.org/cpython/file/2.7/Lib/BaseHTTPServer.py). Firstly, P...

// Default UINavigationBar appearance throughout the app [[UINavigationBar appearance] setTitleTextAttributes:@{NSForegroundColorAttributeName: [UIColor whiteColor], NSFontAttributeName : [UIFont fontWithName:@"HelveticaNeue-CondensedBold...

Spring is a vast framework, so the Spring framework has been divided in several modules which makes spring lightweight. Some important modules are: Spring Core Spring AOP Spring JDBC Spring Transaction Spring ORM Spring MVC All the modules of Spring are independent of each other except S...

Keychain.h #import <Foundation/Foundation.h> typedef void (^KeychainOperationBlock)(BOOL successfulOperation, NSData *data, OSStatus status); @interface Keychain : NSObject -(id) initWithService:(NSString *) service_ withGroup:(NSString*)group_; -(void)insertKey:(NSString *)key with...

Portsnap portsnap fetch portsnap extract updating ports tree with portsnap portsnap update schedule cron job for daily updates 0 3 * * * root /usr/sbin/portsnap cron SVN head cd /usr/ports svnlite checkout https://svnweb.freebsd.org/ports/head . quaterly FreeBSD Ports team freeze...

keyword search cd /usr/ports make search key=apache name search cd /usr/ports make search name=apache24 Using fresports Official FreeBSD ports website (http://freshports.org/) give you a nice way to find ports and all information concerning it.

If you have found your software in the ports tree, now its the time to build it. Simple build and install with manual configuration cd /usr/ports/www/apache24 make make install Simple build and install with automatic configuration cd /usr/ports/www/apache24 make BATCH=yes make install ...

If you want custom configuration from ports, you can configure it before building it make config. All ports configuration are stored in /var/db/ports/${CATEGORY_NAME}/options as makefile. Configuring www/apache24 cd /usr/ports/www/apache24 make config make make install This configuration wil...

Manual packaging You can make your own package based on ports. cd /usr/ports/www/apache24 make package BATCH=yes This command will store your package in /usr/ports/packages/All. Using poudriere poudriere is currently the official package builder for FreeBSD. Installing poudriere pkg instal...

A jail is simply a chroot with strong isolation. So, if you want to create jail, you simply need to create an alternative root and starting a new jail in it. Simple jail deployment from binaries # create our alternative root path JAILROOT="/path/to/my/jail" mkdir -p "${JAILROOT}&q...

FreeBSD jails can have fine grained networking configuration. By default, every jails use the same network configuration than host. Removing network support jail -c name="nonetwork" path="/path/to/your/jail" ip4=disable ip6=disable Allowing only IPv4 networking jail -c name...

Regular expression matching is a powerful tool (in Java, and in other contexts) but it does have some drawbacks. One of these that regular expressions tends to be rather expensive. Pattern and Matcher instances should be reused Consider the following example: /** * Test if all strings in a lis...

Three basic tools. nginx - free, open-source, high-performance HTTP server and reverse proxy, with high performance; gunicorn - 'Green Unicorn' is a Python WSGI HTTP Server for UNIX (needed to manage your server); supervisor - a client/server system that allows its users to monitor and control ...