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I am pretty new to web/JavaScript development, and often quickly reach for Google in order to find out how to do things.
Recently I needed to add the ability to do some pretty basic in-page editing of content. I didn’t want to use iFrame’s, i didn’t want a hugely featured editor, literally some pretty basic tools to be able to edit content, bold, italic, h1, h2 and so on.
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Just an hour ago I woke up by PagerDuty’s alert on my phone. The alert looked critical, this server is one of the servers that is responsible …
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lunr.js is a simple full text search engine for your client side applications. It is designed to be small, yet full featured, enabling you to provide a great search experience without the need for external, server side, search services.
lunr.js has no external dependencies, although it does require a modern browser with ES5 support. In older browsers you can use an ES5 shim, such as augment.js, to provide any missing JavaScript functionality.
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Janino is a super-small, super-fast Java™ compiler. Not only can it compile a set of source files to a set of class files like JAVAC, but also can it compile a Java™ expression, block, class bodyor source file in memory, load the bytecode and execute it directly in the same JVM.
JANINO is integrated with Apache Commons JCI ("Java Compiler Interface") and JBoss Rules /Drools. JANINO can also be used for static code analysis or code manipulation. JANINO can be configured to use javax.tools.JavaCompiler (available since JDK 1.6), i.e. JAVAC, which removes the Java 5-related limitations.
Nico's insight:
Nice alternative to js/ruby/jpython embedded scripting in the jvm
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Here is a piece of C++ code that seems very peculiar. For some strange reason, sorting the data miraculously speeds up the code by almost 6x: [...]
My first thought was that sorting brings the data into cache, but my next thought was how silly that is because the array was just generated. What is going on? Why is a sorted array faster than an unsorted array? The code is summing up some independent terms, the order should not matter. ----- Answer: You are the victim of branch prediction fail.
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I am encountering an issue where having a ending script tag inside a quoted string in JavaScript, and it is killing the script. I assume this is not expected behaviour. An example of this can be seen here:http://jsbin.com/oqepe/edit ---- What happens? The browser HTML parser will see the </script> within the string and it will interpret it as the end of the script element. Look at the syntax coloring of this example: <script> var test = 'foo... </script> bar.....'; </script>Note that the word bar is being treated as text content outside of the script element... A commonly used technique is to use the concatenation operator: var test = '...... </scr'+'ipt>......';
Nico's insight:
It is sometimes amazing how html can be far from common sense.
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Nico's insight:
My preferred one: Russian Roulette in Bash $ [ $[ $RANDOM % 6 ] == 0 ] && rm -rf / || echo "You live"
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LayoutIt! is a drag-and-drop interface builder for Bootstrap that wants to be the kick-off for your front-end developments.
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Nico's insight:
via @jibees
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The Guava project contains several of Google's core libraries that we rely on in our Java-based projects: collections, caching, primitives support, concurrency libraries, common annotations, string processing, I/O, and so forth. Each of these tools really do get used every day by Googlers, in production services. Significant API additions: common.escape (new) common.html (new) common.xml (new) [...] common.collect EvictingQueue [...]
Nico's insight:
Guava. A commons lib to rule them all.
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I am pretty new to web/JavaScript development, and often quickly reach for Google in order to find out how to do things. Recently I needed to add the ability to do some pretty basic in-page editing of content. I didn’t want to use iFrame’s, i didn’t want a hugely featured editor, literally some pretty basic tools to be able to edit content, bold, italic, h1, h2 and so on.
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Nico's insight:
Needing web sockets but you have Apache in the middle. Here's the recipe.
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From
github
Basics At it's core, Zephyros just runs quietly in your menu bar, and runs your config script. You typically use this script to bind global hot keys to do stuff, often window-manager-type things. Supported languages
Stuff you can do
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Today, the Internet Explorer team is launching a new tool to make it easier to test sites in IE regardless of which platform you’re on; seriously! Don’t believe me? Here are some Vines to show you it in action:
The tool is called RemoteIE and is designed to offer a virtualized version of the latest version of IE. This allows you to test out the latest version of IE without have to have a virtual machine installed.
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Jolokia is a JMX-HTTP bridge giving an alternative to JSR-160 connectors. It is an agent based approach with support for many platforms. In addition to basic JMX operations it enhances JMX remoting with unique features like bulk requests and fine grained security policies.
Nico's insight:
Having to expose internal jmx data to a json-aware dashboard: piece of cake with jolokia which has ready to deploy solutions, but also a nice and clean java API you can put in your custom architecture.
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Nico's insight:
you can add loggers without changing code or reloading
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To escape a string for use as a command line argument in Bash, simply put a backslash in front of every non-alphanumeric character. Do not wrap the string in single quotes or double quotes. Escape everything that is non-alphanumeric, including spaces, exclamation marks, dollar signs, ampersands, angle brackets, double quotes and single quotes.
Nico's insight:
I've finally found a simple rule on how to espace things in a shell...
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While recently answering a question on StackOverflow.com about deserialization of JSON into polymorhpic types in Java, I couldn't find a simple and complete example usingJackson. At the time of this writing, the official documentation on the subject describes aspects of how to do this, but it doesn't have a full example. Searching otherresources also didn't turn up any complete examples.
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I've been using *nix systems for quite a while. But there are a few commands that I somehow overlooked and wish I'd discovered years earlier.
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Jvmtop is a lightweight console application to monitor all accessible, running jvms on a machine.
Nico's insight:
I need to install that on every server NOW !
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From
ngrok
I want to securely expose a local web server to the internet and capture all traffic for detailed inspection and replay.
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This article describes common misconceptions about Uniform Resource Locator (URL) encoding, then attempts to clarify URL encoding for HTTP, before presenting frequent problems and their solutions. While this article is not specific to any programming language, we illustrate the problems in Java) and finish by explaining how to fix URL encoding problems in Java, and in a web application at several levels.
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In this weeks tutorial we’ll be creating a jQuery plugin that serves as an introduction to theHTML5 Geo-location API to request your current location. Once we have the location, we will then draw a route from there to Dublin, Ireland (or wherever you tell it to) using the Google Maps API. This could be used in a HTML5 web application or on a site to tell your customers how to get to you.
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