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Immutable vs Mutable types
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Almost, but not exactly. Technically, all variables are passed by reference in Python, but have a semantics more like pass by value in C. A counterexample to your analogy is if you do def f(my_list): my_list = [1, 2, 3]. With pass-by-reference in C, the val...
Prevent Caching in ASP.NET MVC for specific actions using an attribute
...ve Microsoft.AspNet.Mvc.Filters.ResponseCacheFilter
public void ConfigureServices(IServiceCollection services)
...
services.AddMvc(config=>
{
config.Filters.Add(
new ResponseCacheFilter(
new CacheProfile() {
...
What is the difference between String.Empty and “” (empty string)?
...ich makes string.Empty more efficient.
In version 2.0 and later of .NET, all occurrences of "" refer to the same string literal, which means "" is equivalent to .Empty, but still not as fast as .Length == 0.
.Length == 0 is the fastest option, but .Empty makes for slightly cleaner code.
See the ...
Adding new column to existing DataFrame in Python pandas
... because if you have multiple rows, and you use the assignment, it assigns all rows of the new column with that value ( in your case e) which is usually undesirable.
– Paniz
Apr 27 '19 at 22:42
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What is the difference between angular-route and angular-ui-router?
...nize the parts of your interface into a state machine.
Unlike the $route service in Angular core, which is organized around
URL routes, UI-Router is organized around states, which may optionally
have routes, as well as other behavior, attached.
States are bound to named, nested and parall...
Is there a NumPy function to return the first index of something in an array?
...:
itemindex = numpy.where(array==item)
The result is a tuple with first all the row indices, then all the column indices.
For example, if an array is two dimensions and it contained your item at two locations then
array[itemindex[0][0]][itemindex[1][0]]
would be equal to your item and so woul...
Most efficient way to remove special characters from string
I want to remove all special characters from a string. Allowed characters are A-Z (uppercase or lowercase), numbers (0-9), underscore (_), or the dot sign (.).
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Facebook Architecture [closed]
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Facebook is using LAMP structure. Facebook’s back-end services are written in a variety of different programming languages including C++, Java, Python, and Erlang and they are used according to requirement. With LAMP Facebook uses some technologies ,to support large number of re...
Typical AngularJS workflow and project structure (with Python Flask)
...d jetbrains guru) is a nice starting point as it shows the interplay of webservice, database and angular.js within flask.
He builds a pinterest clone with flask, sqlalchemy, flask-restless and angular.js in less than 25 minutes.
Enjoy:
http://www.youtube.com/watch?v=2geC50roans
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How do I set the UI language in vim?
...my OS is set up in German (the standard at our office), I guess vim is actually trying to be helpfull.
15 Answers
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