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Is there a standard function to check for null, undefined, or blank variables in JavaScript?
...re a universal JavaScript function that checks that a variable has a value and ensures that it's not undefined or null ? I've got this code, but I'm not sure if it covers all cases:
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Android - Handle “Enter” in an EditText
I am wondering if there is a way to handle the user pressing Enter while typing in an EditText , something like the onSubmit HTML event.
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Spring Boot - inject map from application.yml
...ious options for setting a prefix, controlling how missing properties are handled, etc. See the javadoc for more information.
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IPC performance: Named Pipe vs Socket
...y? I would prefer to use sockets because they can do two-way communication and are very flexible but will choose speed over flexibility if it is by considerable amount.
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How to do case insensitive search in Vim
... Also, \c can appear anywhere in the pattern, so if you type a pattern and then decide you wanted a case-insensitive search, just add a \c at the end.
– Alok Singhal
Feb 18 '10 at 9:20
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Check whether variable is number or string in JavaScript
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If you're dealing with literal notation, and not constructors, you can use typeof:.
typeof "Hello World"; // string
typeof 123; // number
If you're creating numbers and strings via a constructor, such as var foo = new String("foo"), you should keep in m...
How to serialize an object into a string
I am able to serialize an object into a file and then restore it again as is shown in the next code snippet. I would like to serialize the object into a string and store into a database instead. Can anyone help me?
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Why do we need RESTful Web Services?
...ed if it is very important for you to minimize the coupling between client and server components in a distributed application.
This may be the case if your server is going to be used by many different clients that you do not have control over. It may also be the case if you want to be able to upda...
How to construct a WebSocket URI relative to the page URI?
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If your Web server has support for WebSockets (or a WebSocket handler module) then you can use the same host and port and just change the scheme like you are showing. There are many options for running a Web server and Websocket server/module together.
I would suggest that you look at t...
presentModalViewController:Animated is deprecated in ios6
... an image picker. But when I run it in the simulator, I have a memory leak and I get a warning about presentModalViewcontroller:animated being deprecated in iOS6. I also get dismissModalViewController:animated deprecated. I'm using the SDK 6.1.
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