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Groovy: what's the purpose of “def” in “def x = 0”?

... It's syntactic sugar for basic scripts. Omitting the "def" keyword puts the variable in the bindings for the current script and groovy treats it (mostly) like a globally scoped variable: x = 1 assert x == 1 assert this.binding.getVariable("x") == 1 Usi...
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Get users by name property using Firebase

...thData Auth.register(authData.uid, userData); }, function(error) { alert(error); }); The Firebase auth services will always ensure a unique id among all their providers to be set at uid. This way always you will have the auth.uid and can easily access the desired user to update it, like: ...
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window.onload vs document.onload

...t is fired when the entire page loads, including its content (images, CSS, scripts, etc.). In some browsers it now takes over the role of document.onload and fires when the DOM is ready as well. document.onload It is called when the DOM is ready which can be prior to images and other external c...
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How can I enable or disable the GPS programmatically on Android?

...out showing that builder.Because i need to turn on gps without showing any alerts. – Punithapriya Jul 26 '16 at 6:57 3 ...
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How to check if a string is a valid hex color representation?

...alid, no change will occur. col2=e.style.borderColor; if(col2.length==0) {alert("Bad Color!");} Step 5: Clean up after yourself by setting the color back to an empty string. e.style.borderColor=""; The Div: <div id="mydiv" style="border-style:none; position:absolute; left:-9999px; top:...
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Passing arguments to an interactive program non-interactively

I have a bash script that employs the read command to read arguments to commands interactively, for example yes/no options. Is there a way to call this script in a non-interactive script passing default option values as arguments? ...
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What are all the valid self-closing elements in XHTML (as implemented by the major browsers)?

...i, IE9) supports self-closing syntax on every element. <div/>, <script/>, <br></br> all should work just fine. If they don't, then you have HTML with inappropriately added XHTML DOCTYPE. DOCTYPE does not change how document is interpreted. Only MIME type does. W3C decisi...
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Git hook to send email notification on repo changes

...something like this to your post-receive hook in $GITDIR/hooks, or use the script in the contrib directory of the source (Available here) share | improve this answer | follow...
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How do I load my script into the node.js REPL?

I have a script foo.js that contains some functions I want to play with in the REPL. 11 Answers ...
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How can I be notified when an element is added to the page?

...myParentContainer").on('click', '.removeItemButton', function(){ alert($(this).text() + ' has been removed'); }); If you have dynamic content that should respond to clicks for example, it's best to bind events to a parent container using jQuery.on. ...