大约有 48,000 项符合查询结果（耗时：0.0594秒） [XML]
PHP function to make slug (URL string)
...
Instead of a lengthy replace, try this one:
public static function slugify($text)
{
// replace non letter or digits by -
$text = preg_replace('~[^\pL\d]+~u', '-', $text);
// transliterate
$text = iconv('utf-8', 'us-ascii//TRANSLIT', $text);
// remove unwanted characters
$text = pre...
How to check if field is null or empty in MySQL?
I am trying to figure out how to check if a field is NULL or empty . I have this:
7 Answers
...
Get generated id after insert
...
The insert method returns the id of row just inserted or -1 if there was an error during insertion.
long id = db.insert(...);
where db is SQLiteDatabase.
share
|
improve this answe...
How do I check if there are duplicates in a flat list?
...
Use set() to remove duplicates if all values are hashable:
>>> your_list = ['one', 'two', 'one']
>>> len(your_list) != len(set(your_list))
True
share
|...
If I revoke an existing distribution certificate, will it mess up anything with existing apps?
...came back and said, "Just get it done!". So I am wondering how to proceed. If I go into the provisioning portal, and revoke the dist certificate, and then re-assign one, will I then be able to sign the app and upload it without problem?
...
Javascript !instanceof If Statement
...
Enclose in parentheses and negate on the outside.
if(!(obj instanceof Array)) {
//...
}
In this case, the order of precedence is important (https://developer.mozilla.org/en-US/docs/JavaScript/Reference/Operators/Operator_Precedence). The ! operator precedes the instanc...
Convert bytes to a string
...somebody further: Sometimes you use byte array for e.x. TCP communication. If you want to convert byte array to string cutting off trailing '\x00' characters the following answer is not enough. Use b'example\x00\x00'.decode('utf-8').strip('\x00') then.
– Wookie88
...
#pragma pack effect
I was wondering if someone could explain to me what the #pragma pack preprocessor statement does, and more importantly, why one would want to use it.
...
Deleting all files in a directory with Python
...stdir and os.remove:
import os
filelist = [ f for f in os.listdir(mydir) if f.endswith(".bak") ]
for f in filelist:
os.remove(os.path.join(mydir, f))
Or via glob.glob:
import glob, os, os.path
filelist = glob.glob(os.path.join(mydir, "*.bak"))
for f in filelist:
os.remove(f)
Be sure ...
pandas DataFrame: replace nan values with average of columns
...ld be a scalar or a dict, however, it seems to work with a Series as well. If you want to pass a dict, you could use df.mean().to_dict().
share
|
improve this answer
|
follow...