大约有 44,300 项符合查询结果（耗时：0.0471秒） [XML]
Determine if string is in list in JavaScript
...
288
You can call indexOf:
if (['a', 'b', 'c'].indexOf(str) >= 0) {
//do something
}
...
Checking to see if one array's elements are in another array in PHP
...
205
You can use array_intersect().
$result = !empty(array_intersect($people, $criminals));
...
How to Add Stacktrace or debug Option when Building Android Studio Project
...
12 Answers
12
Active
...
Find Oracle JDBC driver in Maven repository
...
22 Answers
22
Active
...
Cluster analysis in R: determine the optimal number of clusters
...
1024
If your question is how can I determine how many clusters are appropriate for a kmeans analysis...
What are bitwise shift (bit-shift) operators and how do they work?
...
1728
The bit shifting operators do exactly what their name implies. They shift bits. Here's a brie...
How to merge 2 JSON objects from 2 files using jq?
...t will merge them recursively. For example,
jq -s '.[0] * .[1]' file1 file2
Important: Note the -s (--slurp) flag, which puts files in the same array.
Would get you:
{
"value1": 200,
"timestamp": 1382461861,
"value": {
"aaa": {
"value1": "v1",
"value2": "v2",
"value3...
Create an array with same element repeated multiple times
In Python, where [2] is a list, the following code gives this output:
25 Answers
25
...
How to validate IP address in Python? [duplicate]
...
answered Nov 25 '08 at 23:50
DustinDustin
78.2k1717 gold badges103103 silver badges131131 bronze badges
...
Measuring the distance between two coordinates in PHP
...
12 Answers
12
Active
...