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How to use the 'sweep' function
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sweep() is typically used when you operate a matrix by row or by column, and the other input of the operation is a different value for each row / column. Whether you operate by row or column is defined by MARGIN, as for apply(). The values used for what I called "the other input" is ...
Why is there no String.Empty in Java?
...is two, and they would both be referencing exactly the same instance in memory at runtime. I'm not entirely sure why String.EMPTY would save on compile time, in fact I think it would be the latter.
Especially considering Strings are immutable, it's not like you can first get an empty String, and pe...
How do you make div elements display inline?
...;2<br />3</div>
<br class="clearBoth" /><!-- you may or may not need this -->
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What does threadsafe mean?
...d safe"? about the definition of thread safety as found of Wikipedia.
3 important things extracted from the links :
“A piece of code is thread-safe if it functions correctly during
simultaneous execution by multiple threads.”
“In particular, it must satisfy the need for multiple threads to
ac...
How to exit in Node.js
...ixelfreak, exit isn't misleading at all. You are confused about how Node works. Think of Node as the server itself. It isn't just fired up as needed, like PHP is within a web server like Apache. Node doesn't even have to have anything to do with web servers at all! It's just a host for some Jav...
How to detect if a variable is an array
... cross-browser method to determine if a variable in JavaScript is an array or not?
12 Answers
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How to remove extension from string (only real extension!)
I'm looking for a small function that allows me to remove the extension from a filename.
17 Answers
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Which is better in python, del or delattr?
This may be silly, but it's been nagging the back of my brain for a while.
8 Answers
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Why do assignment statements return a value?
...he operation shouldn’t return any value.
Your understanding is 100% incorrect. Can you explain why you believe this false thing?
What is the reasoning behind allowing assignment statements to return a value?
First off, assignment statements do not produce a value. Assignment expressions pr...
How to check if PHP array is associative or sequential?
...ich of these behaviours you actually need. (It may be that either will do for your purposes.)
The first question (simply checking that all keys are numeric) is answered well by Captain kurO.
For the second question (checking whether the array is zero-indexed and sequential), you can use the follow...