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What does curly brackets in the `var { … } = …` statements do?
...h JavaScript 1.7 features. The first one is block-level variables:
let allows you to declare variables, limiting its scope to the block, statement, or expression on which it is used. This is unlike the var keyword, which defines a variable globally, or locally to an entire function regardless of...
Automatic counter in Ruby for each?
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Well spotted. Actually, it's also in 1.8.7, but it's something worth adding.
– paradoja
Feb 10 '09 at 23:18
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How to add/update an attribute to an HTML element using JavaScript?
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What seems easy is actually tricky if you want to be completely compatible.
var e = document.createElement('div');
Let's say you have an id of 'div1' to add.
e['id'] = 'div1';
e.id = 'div1';
e.attributes['id'] = 'div1';
e.createAttribute('id','di...
How do I use the new computeIfAbsent function?
...onacci(0)
memo.put(1,1L); //fibonacci(1)
}
And for the inductive step all we have to do is redefine our Fibonacci function as follows:
public static long fibonacci(int x) {
return memo.computeIfAbsent(x, n -> fibonacci(n-2) + fibonacci(n-1));
}
As you can see, the method computeIfAbsen...
C++ Exceptions questions on rethrow of original exception
...he catch cause the rethrown exception to see the effect of append() being called?
4 Answers
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Should I use .done() and .fail() for new jQuery AJAX code instead of success and error
...recation Notice:
The jqXHR.success(), jqXHR.error(), and jqXHR.complete() callbacks will be deprecated in jQuery 1.8. To prepare your code for their eventual removal, use jqXHR.done(), jqXHR.fail(), and jqXHR.always() instead.
If you are using the callback-manipulation function (using method-chaini...
Push to GitHub without a password using ssh-key
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Here's a quick one-liner shell command that will automatically change your https url to the appropriate git one (Only works for github urls!): git remote set-url origin $(git remote show origin | grep "Fetch URL" | sed 's/ *Fetch URL: //' | sed 's/https:\/\/github.com\//git@github.c...
What are these attributes: `aria-labelledby` and `aria-hidden`
...ions (ARIA) defines ways to make Web
content and Web applications (especially those developed with Ajax and
JavaScript) more accessible to people with disabilities.
To be precise for your question, here is what your attributes are called as ARIA attribute states and model
aria-labelledby: ...
Multiple contexts with the same path error running web service in Eclipse using Tomcat
...lt;Context> tag may be on the same line, but outside the viewport and really far away from the visible one.
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Convert blob to base64
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this worked for me:
var blobToBase64 = function(blob, callback) {
var reader = new FileReader();
reader.onload = function() {
var dataUrl = reader.result;
var base64 = dataUrl.split(',')[1];
callback(base64);
};
reader.readAsDataURL(blob);
...