大约有 6,885 项符合查询结果（耗时：0.0202秒） [XML]
Getting the last argument passed to a shell script
...array[@]}"; do something "$element"; done or iterate over the indices: for index in "${!array[@]}"; do something "$index" "${array[$index]}"; done if you need to do something with the values of the indices.
– Paused until further notice.
Mar 18 '19 at 17:38
...
PHP Multidimensional Array Searching (Find key by specific value)
...lute check against the type because the returned key can sometimes have an index of [0]. So if doing a conditional check, it should look something like this: if (myfunction($array, 'field', 'value') !== FALSE )) // do something...
– Andy Cook
Nov 17 '15 ...
Shuffling a list of objects
...erm = list(range(len(list_one)))
random.shuffle(perm)
list_one = [list_one[index] for index in perm]
list_two = [list_two[index] for index in perm]
Numpy / Scipy
If your lists are numpy arrays, it is simpler:
import numpy as np
perm = np.random.permutation(len(list_one))
list_one = list_one[per...
Circular list iterator in Python
... do like this:
conn = ['a', 'b', 'c', 'd', 'e', 'f']
conn_len = len(conn)
index = 0
while True:
print(conn[index])
index = (index + 1) % conn_len
prints a b c d e f a b c... forever
share
|
...
How to change the href for a hyperlink using jQuery
...SelectorAll('a');
Array.prototype.forEach.call(anchors, function (element, index) {
element.href = "http://stackoverflow.com";
});
If you want to change the href value of all <a> elements that actually have an href attribute, select them by adding the [href] attribute selector (a[href]): ...
Get query from java.sql.PreparedStatement [duplicate]
...gBuffer sb = new StringBuffer();
int indx = 1; // Parameter begin with index 1
while (matcher.find()) {
matcher.appendReplacement(sb, prepHelper.getParameter(indx++));
}
matcher.appendTail(sb);
LOGGER.debug("Executing Query [" + sb.toString() + "] with Database[" + /*db name*/ + "] ...
Android buildscript repositories: jcenter VS mavencentral
... couple of android developer advocates had faced/noticed the issue of huge indexing with maven central.
In the words of Tor Norbye:
I ran AndroidStudio with a brand new settings directory, so it went and connected maven central and downloaded an index of the available artifacts.
Then I hap...
What is the purpose of setting a key in data.table?
...
A key is basically an index into a dataset, which allows for very fast and efficient sort, filter, and join operations. These are probably the best reasons to use data tables instead of data frames (the syntax for using data tables is also much mo...
Print text instead of value from C enum
...
If I were relying on using the enumerations as indexes, I would actually prefer to explicitly number each one. Unnecessary according to standards, but as a group compilers have not exactly been the best at following standards in my experience.
– jdmi...
Meaning of Open hashing and Closed hashing
...e rest helps).
For instance, the "open" in "open addressing" tells us the index (aka. address) at which an object will be stored in the hash table is not completely determined by its hash code. Instead, the index may vary depending on what's already in the hash table.
The "closed" in "closed ha...