大约有 13,000 项符合查询结果（耗时：0.0541秒） [XML]
How to automatically select all text on focus in WPF TextBox?
If I call SelectAll from a GotFocus event handler, it doesn't work with the mouse - the selection disappears as soon as mouse is released.
...
How do I select an entire row which has the largest ID in the table?
...
You could use a subselect:
SELECT row
FROM table
WHERE id=(
SELECT max(id) FROM table
)
Note that if the value of max(id) is not unique, multiple rows are returned.
If you only want one such row, use @MichaelMior's answer,
SELEC...
How can I remove a trailing newline?
...s the Python equivalent of Perl's chomp function, which removes the last character of a string if it is a newline?
28 Ans...
How to delete selected text in the vi editor
I am using PuTTY and the vi editor. If I select five lines using my mouse and I want to delete those lines, how can I do that?
...
Selecting all text in HTML text input when clicked
...
You can use this javascript snippet:
<input onClick="this.select();" value="Sample Text" />
But apparently it doesn't work on mobile Safari. In those cases you can use:
<input onClick="this.setSelectionRange(0, this.value.length)" value="Sample Text" />
...
How does a hash table work?
...but strong hashing...
size_t random[8][256] = { ...random data... };
const char* p = (const char*)&my_double;
size_t hash = random[0][(unsigned)p[0]] ^
random[1][(unsigned)p[1]] ^
... ^
random[7][(unsigned)p[7]];
Weak but oft-fast hashing...
Many librar...
MySQL: determine which database is selected?
After calling mysql_select_db to grab a database, is there any way to later output the name of the database that is currently selected? This seems very basic but I couldn't find anything on php.net or stackoverflow (all results are for "no database selected").
...
jquery get all form elements: input, textarea & select
Is there an easy way (without listing them all separately) in jquery to select all form elements and only form elements.
12...
What is the fastest factorial function in JavaScript? [closed]
...n fac(n){
return(n<2)?1:fac(n-1)*n;
}
It's the simplest way (less characters / lines) I've found, only a function with one code line.
Edit:
If you really want to save some chars you can go with an Arrow Function (21 bytes):
f=n=>(n<2)?1:f(n-1)*n
...
how to get html content from a webview?
...ion con = url.openConnection();
Pattern p = Pattern.compile("text/html;\\s+charset=([^\\s]+)\\s*");
Matcher m = p.matcher(con.getContentType());
/* If Content-Type doesn't match this pre-conception, choose default and
* hope for the best. */
String charset = m.matches() ? m.group(1) : "ISO-8859-1"...