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How can I strip the whitespace from Pandas DataFrame headers?
...me
Columns: [ year, month , day, asdas , asdas, as , sa, asdas ]
%timeit df.rename(columns=lambda x: x.strip())
%timeit df.columns.str.strip()
1000 loops, best of 3: 293 µs per loop
10000 loops, best of 3: 143 µs per loop
So str.strip is ~2X faster, I expect this to scale better for lar...
Concatenating two std::vectors
... the copy method is a not such a good way. It will call push_back multiple time which means that if a lot of elements have to be inserted this could mean multiple reallocations. it is better to use insert as the vector implementation could do some optimization to avoid reallocations. it could reserv...
What are the primary differences between Haskell and F#? [closed]
...d.
While Haskell is an amazing language, the major benefit of F# (for the time being), is that it sits on top of the CLR. This lends it self to polyglot programming. One day, you may write your web UI in ASP.net MVC, your business logic in C#, your core algorithms in F# and your unit tests in Ironr...
Flat file databases [closed]
...e (they can, in fact, put arbitrary code in your "database" to be run each time.)
Personally, I'd say - why not look to the future? There have been so many times that I've had issues because I've been creating my own "proprietary" files, and the project has exploded to a point where it needs a datab...
What do querySelectorAll and getElementsBy* methods return?
...onsider adding a huge library to your project" I know 2012 was a different time, but even then I would've found that bit to be ludicrous.
– CoryCoolguy
May 8 '19 at 18:38
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Visual Studio immediate window command for Clear All
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Here is how to do it at run time:
Reference the EnvDTE dlls in your application.
Create and then use this function as necessary.
Public Sub ClearImmediateWindow()
Try
Dim vsWindowKindImmediateWindow As String _
= "{ECB7191A-597B-41F...
How to use Git?
I am an engineering student who spends most of his spare time watching TV rather than coding. So basically I have zero experience with any kind of version control system. My understanding is somehow they make distribution of projects easier.
...
Determine if running on a rooted device
...) {
Process process = null;
try {
process = Runtime.getRuntime().exec(new String[] { "/system/xbin/which", "su" });
BufferedReader in = new BufferedReader(new InputStreamReader(process.getInputStream()));
if (in.readLine() != null) return true;
...
How can I escape white space in a bash loop list?
...to use one of the above, a third approach (less efficient in terms of both time and memory usage, as it reads the entire output of the subprocess before doing word-splitting) is to use an IFS variable which doesn't contain the space character. Turn off globbing (set -f) to prevent strings containing...
Creating and Update Laravel Eloquent
...y features that I've found myself rebuilding ;) Always good to spend some time browsing the docs :)
– Erik Aybar
Aug 27 '14 at 21:43
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