Tutorial by Examples: t

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...

Tested with A.S. v1.4.1 but should work with newer versions too. Create a new Android Studio project using the project wizard (Menu:/File/New Project): Call it "cvtest1" Form factor: API 19, Android 4.4 (KitKat) Blank Activity named MainActivity You should have a cvtest1 dire...

Expression<Func<int, bool>> checkEvenExpression = i => i%2 == 0; // lambda expression is automatically converted to an Expression<Func<int, bool>>

To show contents of an RDD, it have to be printed: myRDD.foreach(println) To limit number of rows printed: myRDD.take(num_of_rows).foreach(println)

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...

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 ...

When invoking a def, parameters may be assigned explicitly by name. Doing so means they needn't be correctly ordered. For example, define printUs() as: // print out the three arguments in order. def printUs(one: String, two: String, three: String) = println(s"$one, $two, $three") ...

The for comprehension is a compact way to run a block of code that depends on the successful result of multiple futures. With f1, f2, f3 three Future[String]'s that will contain the strings one, two, three respectively, val fCombined = for { s1 <- f1 s2 <- f2 ...

Command Structure is sqlcmd -S yourservername\instancename -d database_name -o outputfilename_withpath -Q "your select query" Switches are as follows -S for servername and instance name -d for source database -o for target outputfile (it will create output file) -Q fo...

For BLE slave devices to do any useful work, the GPIOs of the wireless MCU are almost always involved. For instance, to read temperature from an external sensor, the ADC functionality of GPIO pins may be required. TI's CC2640 MCU features a maximum of 31 GPIOs, given different packaging types. In t...

Cordova plugins are in simple words a layer on top of the respective native platform. Plugins provide an interface between to access the native platform.

cordova plugin add <plugin-name> Example: cordova plugin add cordova-plugin-camera The plugin should be installed in the root directory of the project. Note: Before adding the plugin replace the platform specific www folder content with the outer www folder in the root directory. Th...