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What is stability in sorting algorithms and why is it important?
...the items with the same sorting key in order. Suppose we have a list of 5-letter words:
peach
straw
apple
spork
If we sort the list by just the first letter of each word then a stable-sort would produce:
apple
peach
straw
spork
In an unstable sort algorithm, straw or spork may be interchanged...
Why doesn't os.path.join() work in this case?
...lute path component.
Note on Windows, the behaviour in relation to drive letters, which seems to have changed compared to earlier Python versions:
On Windows, the drive letter is not reset when an absolute path component (e.g., r'\foo') is encountered. If a component contains a drive letter, a...
Java: Difference between PrintStream and PrintWriter
...ns between PrintStream and PrintWriter are that a PrintWriter cannot write raw bytes and the two classes wrap different types of destinations.
– Ted Hopp
May 9 '13 at 3:47
...
How do I encode/decode HTML entities in Ruby?
...
To decode characters in Rails use:
<%= raw '<html>' %>
So,
<%= raw '&lt;br&gt;' %>
would output
<br>
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Annotating text on individual facet in ggplot2
...function.
tag_facet <- function(p, open = "(", close = ")", tag_pool = letters, x = -Inf, y = Inf,
hjust = -0.5, vjust = 1.5, fontface = 2, family = "", ...) {
gb <- ggplot_build(p)
lay <- gb$layout$layout
tags <- cbind(lay, label = paste0(open, tag_pool[la...
HTML5 Email Validation
...resses -- for instance, it rejects email addresses that have a one- or two-letter username, or which are hosted at a one-letter domain name.
– duskwuff -inactive-
Nov 20 '16 at 4:51
...
How to avoid “cannot load such file — utils/popen” from homebrew on OSX
...
Uninstall homebrew:
ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/uninstall)"
Then reinstall
ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)"
Warning: This script will remove: /Library/Caches/Hom...
What is the list of valid @SuppressWarnings warning names in Java?
...o adds:
javadoc to suppress warnings relative to javadoc warnings
rawtypes to suppress warnings relative to usage of raw types
static-method to suppress warnings relative to methods that could be declared as static
super to suppress warnings relative to overriding a method without super...
RegEx for matching UK Postcodes
...various solutions listed above appear to apply different rules as to which letters are allowed.
After some research, we've found some more information. Apparently a page on 'govtalk.gov.uk' points you to a postcode specification govtalk-postcodes. This points to an XML schema at XML Schema which pr...
How to alias a table in Laravel Eloquent queries (or using Query Builder)?
... ::from( 'items as items_alias' )
->join( 'attachments as att', DB::raw( 'att.item_id' ), '=', DB::raw( 'items_alias.id' ) )
->select( DB::raw( 'items_alias.*' ) )
->get();
This will automatically add table prefix to table names and returns an instance of Items model. not a ba...