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Create an instance of a class from a string
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Related with great examples: stackoverflow.com/questions/493490/…
– John S.
Apr 24 '13 at 14:23
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Spring Cache @Cacheable - not working while calling from another method of the same bean
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I believe this is how it works. From what I remember reading, there is a proxy class generated that intercepts all requests and responds with the cached value, but 'internal' calls within the same class will not get the cached value.
From https:...
Location of parenthesis for auto-executing anonymous JavaScript functions?
I was recently comparing the current version of json2.js with the version I had in my project and noticed a difference in how the function expression was created and self executed.
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What is “(program)” in Chrome debugger’s profiler?
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(program) is Chrome itself, the root of the tree calling all other code...it's there because the jump from native code to JavaScript, resource loading, etc. has to start somewhere :)
You can see examples of the treeview in the Chrome developer ...
Invalidating JSON Web Tokens
For a new node.js project I'm working on, I'm thinking about switching over from a cookie based session approach (by this, I mean, storing an id to a key-value store containing user sessions in a user's browser) to a token-based session approach (no key-value store) using JSON Web Tokens (jwt).
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Check if a string matches a regex in Bash script
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You can use the test construct, [[ ]], along with the regular expression match operator, =~, to check if a string matches a regex pattern.
For your specific case, you can write:
[[ $date =~ ^[0-9]{8}$ ]] && echo "yes"
Or more a accurate test:
[[ $date =~ ^[0-9]{...
What's the difference between window.location and document.location in JavaScript?
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According to the W3C, they are the same. In reality, for cross browser safety, you should use window.location rather than document.location.
See: http://www.w3.org/TR/html/browsers.html#dom-location
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How to handle button clicks using the XML onClick within Fragments
Pre-Honeycomb (Android 3), each Activity was registered to handle button clicks via the onClick tag in a Layout's XML:
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Return None if Dictionary key is not available
I need a way to get a dictionary value if its key exists, or simply return None , if it does not.
11 Answers
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Why should Java ThreadLocal variables be static
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Because if it were an instance level field, then it would actually be "Per Thread - Per Instance", not just a guaranteed "Per Thread." That isn't normally the semantic you're looking for.
Usually it's holding something like objects ...