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Pandas: create two new columns in a dataframe with values calculated from a pre-existing column
...e of NumPy's extremely fast vectorized operations instead of our loops. We now have a 30x speedup over the original.
The simplest speed test with apply
The above example should clearly show how slow apply can be, but just so its extra clear let's look at the most basic example. Let's square a Se...
Removing duplicate rows in Notepad++
...ers, but this is the same thing.
The check boxes and buttons required will now appear in the menu under: TextFX -> TextFX Tools.
Make sure "sort outputs only unique..." is checked. Next, select a block of text (Ctrl+A to select the entire document). Finally, click "sort lines case sensitive" or "...
Batch renaming files with Bash
.../rename pattern which includes new folder structure.
This will ensure we know the names of our target folders. When we
rename we'll need to use it on the target file name.
# generate the rename target
target="$(sed $sed_pattern <<< $file)"
# Use absolute path of the rename target to mak...
warning: incompatible implicit declaration of built-in function ‘xyz’
... In an implicit declaration, the return type is int if I recall correctly. Now, GCC has built-in definitions for some standard functions. If an implicit declaration does not match the built-in definition, you get this warning.
To fix the problem, you have to declare the functions before using them...
Converting VS2012 Solution to VS2010
...will only work if your project does not have dependencies with vs2013...]
Now open your website in vs2010
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Open Graph namespace declaration: HTML with XMLNS or head prefix?
...
Nothing will break right now, but relying on defaults is rarely a good idea when you can be explicit. If 2 years down the road we change the defaults, your site will break. Also, if you declare your namespaces directly it will help other parsers not ...
Redirect From Action Filter Attribute
...
My question now is why did Microsoft decide to make this filter protected there must be some reasonable explanation? I feel very dirty redefining this accessibility of RedirectToAction without understanding why it was encapsulated in the...
Do asynchronous operations in ASP.NET MVC use a thread from ThreadPool on .NET 4
... end of the request execution, the thread is returned to the thread pool.
Now let's take an example of the asynchronous pattern:
public void IndexAsync()
{
// perform some processing
}
public ActionResult IndexCompleted(object result)
{
return View();
}
When a request is sent to the Ind...
How can I detect if a file is binary (non-text) in python?
...ause the mimetypes module is not good for all files. I'm looking at a file now which system file reports as "UTF-8 Unicode text, with very long lines" but mimetypes.gest_type() will return (None, None). Also, Apache's mimetype list is a whitelist/subset. It is by no means a complete list of mimetyp...
Coloring white space in git-diff's output
...<file>
or
git diff --ws-error-highlight=all <file>
I don't know of a way to permanently turn this on and store this in config aside from using an alias:
git config alias.df 'diff --ws-error-highlight=all'
Now you can use:
git df <file>
To see the changes in red.
Note that w...