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var functionName = function() {} vs function functionName() {}
...s is a function expression:
var xyz = function(){};
xyz here is defined from the point of assignment:
// We can't call it here
xyz(); // UNDEFINED!!!
// Now it is defined
xyz = function(){}
// We can call it here
xyz(); // works
Function declaration vs. function expression is the real reason...
String concatenation in Ruby
...g"
The second method seems to be more efficient in term of memory/speed from what I've seen (not measured though). All three methods will throw an uninitialized constant error when ROOT_DIR is nil.
When dealing with pathnames, you may want to use File.join to avoid messing up with pathname separ...
Recommended way to save uploaded files in a servlet application
...
}
Or, when you want to autogenerate an unique file name to prevent users from overwriting existing files with coincidentally the same name:
File file = File.createTempFile("somefilename-", ".ext", uploads);
try (InputStream input = part.getInputStream()) {
Files.copy(input, file.toPath(), Sta...
Making an iframe responsive
...
I found a solution from from Dave Rupert / Chris Coyier. However, I wanted to make the scroll available so I came up with this:
// HTML
<div class="myIframe">
<iframe> </iframe>
</div>
// CSS
.myIframe {
...
final keyword in method parameters [duplicate]
...er, if the parameter is not final, although one can reassign the parameter from the passed in argument to anything else, the caller of the function never loses its reference, and continues to point to the same object.
– Armand
Feb 20 '14 at 18:19
...
Is there a standardized method to swap two variables in Python?
...
Python evaluates expressions from left to right. Notice that while
evaluating an assignment, the right-hand side is evaluated before the
left-hand side.
http://docs.python.org/3/reference/expressions.html#evaluation-order
That means the follow...
How to check if a specified key exists in a given S3 bucket using Java
...GetObject access will not work. The reason being, Amazon will prevent you from checking for the presence of the key if you dont have ListBucket access. Just knowing whether a key is present or not, will also suffice for malicious users in some cases. Hence unless they have ListBucket access they wi...
Using a dictionary to count the items in a list [duplicate]
... 2.7 and 3.1 there is special Counter dict for this purpose.
>>> from collections import Counter
>>> Counter(['apple','red','apple','red','red','pear'])
Counter({'red': 3, 'apple': 2, 'pear': 1})
share
...
Remap values in pandas column with a dict
...s doesn't work anymore at all, which isn't surprising given the answer was from 4 years ago. This question needs a new answer given how general the operation is...
– PrestonH
Nov 21 '17 at 17:01
...
Is proprietary code legally safe on bitbucket or github? [closed]
...
From GitHub:
We claim no intellectual property rights over the material you provide to the Service. Your profile and materials uploaded remain yours. However, by setting your pages to be viewed publicly, you agree to allo...