大约有 19,594 项符合查询结果（耗时：0.0374秒） [XML]
What's the recommended way to extend AngularJS controllers?
...extend (or $.extend) actually means extending the $scope only, but if your base controller also defines some properties (e.g. this.myVar=5), you only have access to this.myVar in the extending controller when using angular.extend
– schellmax
Dec 23 '14 at 9:46
...
Re-ordering columns in pandas dataframe based on column name [duplicate]
I have a dataframe with over 200 columns. The issue is as they were generated the order is
11 Answers
...
How to find list intersection?
... @NItishKumarPal intersection is commonly understood to be set based. You are looking for a slightly different animal - and you may need to do that manually by sorting each list and merging the results - and keeping dups in the merging.
– javadba
Ja...
JavaScript exponents
...
Math.pow(base, exponent), for starters.
Example:
Math.pow(12, 2)
share
|
improve this answer
|
follow
...
Entity Framework 6 Code first Default value
...oley83, yes, you are right. This method only add default constraint at database level. For complete solution you also need to assign default value in constructor of entity or use property with backed field as shown in answer above
– gdbdable
Feb 18 '15 at 12:39...
Sass Variable in CSS calc() function
...issue. It will calculate all media-breakpoint automatically by given rate (base-size/rate-size)
$base-size: 16;
$rate-size-xl: 24;
// set default size for all cases;
:root {
--size: #{$base-size};
}
// if it's smaller then LG it will set size rate to 16/16;
// example: ...
Calculate text width with JavaScript
... fiddle compares this Canvas method to a variation of Bob Monteverde's DOM-based method, so you can analyze and compare accuracy of the results.
There are several advantages to this approach, including:
More concise and safer than the other (DOM-based) methods because it does not change global stat...
How exactly does tail recursion work?
...rsively compose the final value. In Tail Recursion they only reference the base case (last one evaluated). We call accumulator the argument that keeps track of the older values.
Recursion Templates
The regular recursive function go as follows:
type regular(n)
base_case
computation
ret...
Unit testing of private methods [duplicate]
...ll going to be private, but now you can derive a "testing" class from your base class that exposes the private functionality you want tested.
Here's a minimal example:
class BASE_CLASS {
protected:
int your_method(int a, int b);
};
class TEST_CLASS : public BASE_CLASS {
public:
int yo...
Simultaneously merge multiple data.frames in a list
...using the tidyverse packages. For comparison purposes below, you'll find a base R version using the same sample dataset.
1) Join them with reduce from the purrr package:
The purrr package provides a reduce function which has a concise syntax:
library(tidyverse)
list(x, y, z) %>% reduce(left_...