大约有 37,000 项符合查询结果（耗时：0.0498秒） [XML]
What do 'real', 'user' and 'sys' mean in the output of time(1)?
...nning in kernel mode and runs code from a specific location held in a jump table. For security reasons, you cannot switch to kernel mode and execute arbitrary code - the traps are managed through a table of addresses that cannot be written to unless the CPU is running in supervisor mode. You trap ...
What happens if you don't commit a transaction to a database (say, SQL Server)?
... looks from outside the transaction. Depending on the isolation level, the table may be locked until the first window is committed, or you might (not) see what the other transaction has done so far, etc.
Play around with the different isolation levels and no lock hint to see how they affect the res...
What type of hash does WordPress use?
...
The WordPress password hasher implements the Portable PHP password hashing framework, which is used in Content Management Systems like WordPress and Drupal.
They used to use MD5 in the older versions, but sadly for me, no more. You can generate hashes using this encrypti...
How to Set Focus on Input Field using JQuery
...us attribute to the input field and voila!
function addfield() {
n=$('table tr').length;
$('table').append('<tr><td><input name=field'+n+' autofocus></td><td><input name=value'+n+'></td></tr>');
$('input[name="aa"'+n+']').focus();
}
...
How can I see the specific value of the sql_mode?
...-----+
| PIPES_AS_CONCAT,ANSI_QUOTES,IGNORE_SPACE,ORACLE,NO_KEY_OPTIONS,NO_TABLE_OPTIONS,NO_FIELD_OPTIONS,NO_AUTO_CREATE_USER |
+----------------------------------------------------------------------------------------------------------------------+
1 row in set (0.00 sec)
...
Advantages of Antlr (versus say, lex/yacc/bison) [closed]
...here LL grammars have advantages over LALR grammars.
YACC/Bison generate table driven parsers, which means the "processing logic" is contained in the parser program's data, not so much in the parser's code. The pay off is that even a parser for a very complex language has a relatively small code f...
LINQ Orderby Descending Query
... are ordering value which is null. If Delivery is a foreign key associated table then you should include this table first, example below:
var itemList = from t in ctn.Items.Include(x=>x.Delivery)
where !t.Items && t.DeliverySelection
orderby t.Deli...
How to print a dictionary line by line in Python?
... is even worse than that. Basically I've parsed out some data from an HTML table, and I happened to store it in a dictionary, and now I'm trying to take that dictionary data and put it into a DataFrame before I export it all to an Oracle table....it's pretty in depth I know, but the step that is hol...
Multiple file upload in php
...t;form method=post action='' enctype='multipart/form-data'>";
echo "<table border='0' width='400' cellspacing='0' cellpadding='0' align=center>";
for($i=1; $i<=$max_no_img; $i++){
echo "<tr><td>Images $i</td><td>
<input type=file name='images[]' class='bginput'...
Converting HTML string into DOM elements? [duplicate]
...so if you had a <td> you'd have to wrap the whole HTML string in <table><tbody><tr>...</tr></tbody></table>, write that to innerHTML and extricate the actual <td> you wanted from a couple of levels down.
...