大约有 40,000 项符合查询结果（耗时：0.0388秒） [XML]
Psql list all tables
...ate as "Collate",
d.datctype as "Ctype",
pg_catalog.array_to_string(d.datacl, E'\n') AS "Access privileges"
FROM pg_catalog.pg_database d
ORDER BY 1;
**************************
so you can see that psql is searching pg_catalog.pg_database when it gets a list of databases. Similarly, f...
Is there a difference between “throw” and “throw ex”?
...hrow doesn't - the original offender would be preserved.
static void Main(string[] args)
{
try
{
Method2();
}
catch (Exception ex)
{
Console.Write(ex.StackTrace.ToString());
Console.ReadKey();
}
}
private static void Method2()
{
try
{
...
Matplotlib tight_layout() doesn't take into account figure suptitle
...=24)
# Instead, do a hack by annotating the first axes with the desired
# string and set the positioning to 'figure fraction'.
fig.get_axes()[0].annotate('Long Suptitle', (0.5, 0.95),
xycoords='figure fraction', ha='center',
fontsize=24
...
Red black tree over avl tree
...ack tree.
AVL trees store the balance factor at each node. This takes O(N) extra space. However, if we know that the keys that will be inserted in the tree will always be greater than zero, we can use the sign bit of the keys to store the colour information of a red-black tree. Thus, in such cases r...
How to pass all arguments passed to my bash script to a function of mine? [duplicate]
...t want to do:
"$*" gives all of the arguments stuck together into a single string (separated by spaces, or whatever the first character of $IFS is). This looses the distinction between spaces within arguments and the spaces between arguments, so is generally a bad idea. Although it might be ok for p...
Dynamic type languages versus static type languages
...t be proven by the compiler. A simple example being if(1) a = 3; else a = "string";, surely since it's always true, the else-branch will never be executed in the program, and no type error shall occur. But it can't prove these cases in a general way, so it's rejected. This is the major weakness of a...
Can CSS force a line break after each word in an element?
...es a line-break wherever a line-break appears in the code, but ignores the extra whitespace (tabs and spaces etc.).
First, write your words on separate lines in your code:
<div>Short
Word</div>
Then apply the style to the element containing the words.
div { white-space: pre-line; }...
How do I trigger the success callback on a model.save()?
...you don't pass the model when calling save. the first argument of save is extra attributes that you can set before calling save. It'd be like calling model.set(model.toJSON()); model.save(). there's no reason to set a model to what the model is set to.. it's the epitome of redundant to pass a mod...
Should a retrieval method return 'null' or throw an exception when it can't produce the return value
....
Whatever you do, I highly advise against the third option: Returning a string that says "WTF".
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PHP function overloading
... case 'resource': $c .= 'r'; break;
case 'string': $c .= 's'; break;
case 'unknown type':$c .= 'u'; break;
}
}
}
return $c;
}
// Get a reference variable by name
static function &ref...