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Java release naming is a little confusing. There are actually two systems of naming and numbering, as shown in this table: JDK versionMarketing namejdk-1.0JDK 1.0jdk-1.1JDK 1.1jdk-1.2J2SE 1.2......jdk-1.5J2SE 1.5 rebranded Java SE 5jdk-1.6Java SE 6jdk-1.7Java SE 7jdk-1.8Java SE 8jdk-91Java SE 9 (n...

Bootstrap provides multiple classes for styling buttons and making them stand out. Bootstrap buttons can be created by adding the .btn class to an element. Bootstrap ClassRole (color).btn-defaultStandard button (white).btn-primaryProvides extra visual weight and identifies the primary action (blue...

In most cases all data that is accessed by several threads should be initialized before the threads are created. This ensures that all threads start with a clear state and no race condition occurs. If this is not possible once_flag and call_once can be used #include <threads.h> #include &lt...

Function composition allows for two functions to operate and be viewed as a single function. Expressed in mathematical terms, given a function f(x) and a function g(x), the function h(x) = f(g(x)). When a function is compiled, it is compiled to a type related to Function1. Scala provides two method...

In JavaScript, the JSON object is used to parse a JSON string. This method is only available in modern browsers (IE8+, Firefox 3.5+, etc). When a valid JSON string is parsed, the result is a JavaScript object, array or other value. JSON.parse('"bar of foo"') // "bar of foo" (t...

Probably the two most popular free implementations of Common Lisp are Clozure Common Lisp (CCL) and Steel Bank Common Lisp (SBCL). They are both available for a variety of platforms including Linux on x86-64 and Linux on ARM. CCL: http://ccl.clozure.com/download.html SBCL: http://www.sbcl.org/gett...

Constraint created as NSLayoutConstraint(item: myView, attribute: NSLayoutAttribute.Leading, relatedBy: NSLayoutRelation.Equal, toItem: view, attribute: NSLayoutAttribute.LeadingMargin, multiplier: 1.0, constant: 20.0) or, from math point of view: view.attribute * multiplier + constant ...

Anonymous functions can be used for functional programming. The main problem to solve is that there is no native way for anchoring a recursion, but this can still be implemented in a single line: if_ = @(bool, tf) tf{2-bool}(); This function accepts a boolean value and a cell array of two functi...

Use the package percolate:synced-cron Define a job: SyncedCron.add({ name: 'Find new matches for a saved user filter and send alerts', schedule: function(parser) { // parser is a later.parse object return parser.text('every 10 minutes'); }, job: function() { user.alerts...

Ordering directly on JSONField is not yet supported in Django. But it's possible via RawSQL using PostgreSQL functions for jsonb: from django.db.models.expressions import RawSQL RatebookDataEntry.objects.all().order_by(RawSQL("data->>%s", ("json_objects_key",))) This e...

There are two PyCharm editions: Community and Professional. Both are downloadable from JetBrains website. Additionally, there is another edition, PyCharm Edu. JetBrains recommend this edition, if you are learning or teaching Programming with Python. The supported platforms are Windows, Linux and m...

Microsoft Access has existed since 1992, and older versions continue to see regular use when business-critical database applications have been built on them. A very comprehensive resource summarizing the release history (with links to release notes, where available) is: Microsoft Access Version...

A common thought pattern for inexperienced Java programmers is that exceptions are "a problem" or "a burden" and the best way to deal with this is catch them all1 as soon as possible. This leads to code like this: .... try { InputStream is = new FileInputStream(fileName);...

To search for text foo within a {} block surrounding the cursor use the following command (<ESC> - escape key, <CR> - enter key) : vi{<ESC>/\%Vfoo<CR> now you can jump between the matches within the block by pressing n and p. If you have hlsearch option enabled this will ...

As a privileged user (root or sudo): Create scollector directory: mkdir /opt/scollector In the /opt/scollector directory, download the latest binary build from the bosun/scollector site, [http://bosun.org/scollector/][1] wget https://github.com/bosun-monitor/bosun/releases/download/"version...

Detailed instructions on getting datepicker set up or installed.

An example of a class that contains a parcelable class inside: public class Repository implements Parcelable { private String name; private Owner owner; private boolean isPrivate; public Repository(String name, Owner owner, boolean isPrivate) { this.name = name; ...

A function is similar in look to a mixin but it doesn't add any styles, it only returns a value. Functions should be used to prevent repeated logic in your styles. Sass has some built-in functions that are called using the standard CSS function syntax. h1 { background: hsl(0, 25%, 50%); } ...

It is easy to get confused in the C preprocessor, and treat it as part of C itself, but that is a mistake because the preprocessor is just a text substitution mechanism. For example, if you write /* WRONG */ #define MAX 100; int arr[MAX]; the code expands to int arr[100;]; which is a synta...

You can define central config info's in a separate gradle include file Centralizing dependencies via "dependencies.gradle" file a stand alone properties file Versioning your builds via "version.properties" file or do it with root gradle.properties file the project structu...