大约有 11,600 项符合查询结果（耗时：0.0194秒） [XML]
Tool for generating railroad diagram used on json.org [closed]
...ilroad diagrams on json.org which are a graphical representation of the BNF language. I haven't found any tools that can produce results as eloquently.
...
Adding a legend to PyPlot in Matplotlib in the simplest manner possible
Please consider the graphing script below:
7 Answers
7
...
How to use if statements in underscore.js templates?
...t;span class="date"><%= date %></span>
<% } %>
Remember that in underscore.js templates if and for are just standard javascript syntax wrapped in <% %> tags.
share
|
imp...
Is nested function a good approach when required by only one function? [closed]
Let's say that a function A is required only by function B , should A be defined inside B?
12 Answers
...
Is returning by rvalue reference more efficient?
...
Beta_ab&&
Beta::toAB() const {
return move(Beta_ab(1, 1));
}
This returns a dangling reference, just like with the lvalue reference case. After the function returns, the temporary object will get destructed. You...
What is the difference between char array and char pointer in C?
I am trying to understand pointers in C but I am currently confused with the following:
8 Answers
...
Is there a query language for JSON?
...
Sure, how about:
JsonPath.
Json Query
They all seem to be a bit work in progress, but work to some degree. They are also similar to XPath and XQuery conceptually; even though XML and JSON have different conceptual models (hierarchic...
What's the difference between echo, print, and print_r in PHP?
...
print and echo are more or less the same; they are both language constructs that display strings. The differences are subtle: print has a return value of 1 so it can be used in expressions whereas echo has a void return type; echo can take multiple parameters, although such u...
Getting a list of associative array keys
...
You can use: Object.keys(obj)
Example:
var dictionary = {
"cats": [1, 2, 37, 38, 40, 32, 33, 35, 39, 36],
"dogs": [4, 5, 6, 3, 2]
};
// Get the keys
var keys = Object.keys(dictionary);
console.log(keys);
See reference below...
Selecting a row of pandas series/dataframe by integer index
...curious as to why df[2] is not supported, while df.ix[2] and df[2:3] both work.
6 Answers
...