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Add list to set?
...a list to a set because lists are mutable, meaning that you can change the contents of the list after adding it to the set.
You can however add tuples to the set, because you cannot change the contents of a tuple:
>>> a.add(('f', 'g'))
>>> print a
set(['a', 'c', 'b', 'e', 'd', ('...
SQL join: selecting the last records in a one-to-many relationship
Suppose I have a table of customers and a table of purchases. Each purchase belongs to one customer. I want to get a list of all customers along with their last purchase in one SELECT statement. What is the best practice? Any advice on building indm>ex m>es?
...
Restful way for deleting a bunch of items
...
DELETE /ObjectName HTTP/1.1
Host: BucketName.s3.amazonaws.com
Date: date
Content-Length: length
Authorization: authorization string (see Authenticating Requests (AWS Signature Version 4))
Multi-Object Delete request:
POST /?delete HTTP/1.1
Host: bucketname.s3.amazonaws.com
Authorization: author...
Is there a version of JavaScript's String.indm>ex m>Of() that allows for regular m>ex m>pressions?
...hat takes a regular m>ex m>pression instead of a string for the first first parameter while still allowing a second parameter ?
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How to move screen without moving cursor in Vim?
I recently discovered Ctrl + E and Ctrl + Y shortcuts for Vim that respectively move the screen up and down with a one line step, without moving the cursor .
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How to replace an entire line in a tm>ex m>t file by line number
...where I want a bash script to replace an entire line in a file.
The line number is always the same, so that can be a hard-coded variable.
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Javascript when to use prototypes
I'd like to understand when it is appropriate to use prototype methods in js. Should they always be used? Or are there cases where using them is not preferred and/or incurs a performance penalty?
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Reading Xml with XmlReader in C#
...using (XmlReader reader = XmlReader.Create(inputUrl))
{
reader.MoveToContent();
while (reader.Read())
{
if (reader.NodeType == XmlNodeType.Element)
{
if (reader.Name == elementName)
{
XElement el = XNode.ReadFrom(reader) as XElement;
if (...
Moment js date time comparison
I'm using moment.js to format my date time, here I have two date values, and I want to achieve a particular function when one date is greater than the other. I read most of their docs, but didn't find the function to achieve this. I know it will be there.
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How do I link to part of a page? (hash?)
...m>ex m>ample.com/page.html#foo">Jump to #foo on page.html</a>
Linking content on the same page m>ex m>ample: <a href="#foo">Jump to #foo on same page</a>
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