Tutorial by Examples: l

A common mistake a lot of people starting out with FileSystemWatcher does is not taking into account That the FileWatcher event is raised as soon as the file is created. However, it may take some time for the file to be finished . Example: Take a file size of 1 GB for example . The file apr ask c...

Dependencies can be added for specific configuration like test/androidTest androidTestCompile 'com.android.support.test.espresso:espresso-core:2.2.1' testCompile 'junit:junit:3.8.1' Alternatively create your own configuration configurations { myconfig } And then download dependency fo...

Suppose we have an array of integers and we want to figure out the maximum value without holding the whole array in memory all at once. This approach can be adapted to handle a variety of other situations in which data needs to be processed while being deserialized instead of after. extern crate se...

Selecting only the attribute value of a link:href will return the relative URL. String bodyFragment = "<div><a href=\"/documentation\">Stack Overflow Documentation</a></div>"; Document doc = Jsoup.parseBodyFragment(bodyFragment); ...

Placeholders can be used in strings to automatically substitute the values in the final string. container = "cup" liquid = "coffee" string = "Filling the #{container} with #{liquid}..." The above String - when printed - will say: Filling the cup with coffee... Yo...

If you want to extract a subset of an array (i.e. numbers = [1, 2, 3, 4, 5, 6, 7, 8, 9]) you can easily do this with one of the following examples: numbers[0..2] will return [1, 2, 3] numbers[3...-2] will return [3, 4, 5, 6] numbers[-2..] will return [8, 9] numbers[..] will return [1, 2, 3, 4,...

Sometimes we need to change words position from one place to another or reduce size of the words and change the color of words automatically to improve the attraction of our website or web apps. JQuery helps a lot with this concept using fadeIn(), hide(), slideDown() but its functionality are limite...

CoffeeScriptJavaScriptis, =====isnt, !=!==not!and&&or||true, yes, ontruefalse, no, offfalse@, thisthisofininNo equivalenta ** bMath.pow(a, b)a // bMath.floor(a / b)a %% b(a % b + b) % b

A singleton is a pattern that restricts the instantiation of a class to one instance/object. For more info on python singleton design patterns, see here. class Singleton: def __new__(cls): try: it = cls.__it__ except AttributeError: it = cls.__it__ =...

The disabled binding adds a disabled attribute to a html element causing it to no longer be editable or clickable. This is useful mainly for <input>, <select>, <textarea>, <a> and <button> elements <input data-bind="disabled: disableInput"/> <sc...

Many bugs in knockout data binds are caused by undefined properties in a viewmodel. Knockout has two handy methods to retrieve the binding context of an HTML element: // Returns the binding context to which an HTMLElement is bound ko.contextFor(element); // Returns the viewmodel to which ...

CREATE TABLE all_floating_numeric_types( c_float float, c_double double ); Minimum and maximum data values: insert into all_floating_numeric_types values (-3.4028235E38,-1.7976931348623157E308); insert into all_floating_numeric_types values (-1.4E-45,-4.9E-324); insert into all_floatin...

CREATE TABLE all_binary_types( c_boolean boolean, c_binary binary ); Sample data: insert into all_binary_types values (0,1234); insert into all_binary_types values (1,4321); Note: For boolean, internally it stored as true or false. For binary, it will store base64 encoded value....

ARRAY CREATE TABLE array_data_type( c_array array<string>) ROW FORMAT DELIMITED FIELDS TERMINATED BY ',' COLLECTION ITEMS TERMINATED BY '&'; Create data.csv with data: arr1&arr2 arr2&arr4 Put data.csv in /tmp folderand load this data in Hive LOAD DATA LOCAL I...

When using interop methods, you can use GetLastError API to get additional information on you API calls. DllImport Attribute SetLastError Attribute SetLastError=true Indicates that the callee will call SetLastError (Win32 API function). SetLastError=false Indicates that the callee will not call...

img{ float:left; width:100px; margin:0 10px; } .div1{ background:#f1f1f1; /* does not create block formatting context */ } .div2{ background:#f1f1f1; overflow:hidden; /* creates block formatting context */ } https://jsfiddle.net/MadalinaTn/qkwwmu6m/2/ Using the o...

HTML: <div class="wrapper"> <div class="outer"> <div class="inner"> centered </div> </div> </div> CSS: .wrapper { height: 600px; text-align: center; } .outer { display: table; ...

Typed holes can make it easier to define functions, through an interactive process. Say you want to define a class instance Foo Bar (for your custom Bar type, in order to use it with some polymorphic library function that requires a Foo instance). You would now traditionally look up the documentati...

Redis has publish/subscribe for sending messages. This is handled by subscribing to a channel & publishing to channel. Yes, subscribers will subscribe to one or more channels. Publisher need not know who are all subscribers. Instead, publisher will publish to specific channel. All the subscriber...

POSIX character classes are predefined sequences for a certain set of characters. Character classDescription[:alpha:]Alphabetic characters[:alnum:]Alphabetic characters and digits[:digit:]Digits[:xdigit:]Hexadecimal digits[:blank:]Space and Tab[:cntrl:]Control characters[:graph:]Visible characters ...