大约有 10,100 项符合查询结果（耗时：0.0165秒） [XML]
Why should I care that Java doesn't have reified generics?
...ys be unsafe without reified generics:
List<String> myFriends = new ArrayList();
myFriends.add("Alice");
getSession().put("friends", myFriends);
// later, elsewhere
List<Friend> myFriends = (List<Friend>) getSession().get("friends");
myFriends.add(new Friend("Bob")); // works like...
How to express a NOT IN query with ActiveRecord/Rails?
...t(title: ['Rails 3', 'Rails 5'])
Rails 3:
Topic.where('id NOT IN (?)', Array.wrap(actions))
Where actions is an array with: [1,2,3,4,5]
share
|
improve this answer
|
fo...
Why is the minimalist, example Haskell quicksort not a “true” quicksort?
...ort C code into Haskell. Brace yourself.
import Control.Monad
import Data.Array.IO
import Data.IORef
qsort :: IOUArray Int Int -> Int -> Int -> IO ()
qsort a lo hi = do
(h,l,p,t) <- liftM4 (,,,) z z z z
when (lo < hi) $ do
l .= lo
h .= hi
p .=. (a!hi)
doWhile (...
How do I print the full value of a long string in gdb?
...print elements number-of-elements
Set a limit on how many elements of an array GDB will print. If GDB is printing a large array, it stops printing after it has printed the number of elements set by the set print elements command. This limit also applies to the display of strings. When GDB starts, ...
JavaScript data grid for millions of rows [closed]
...ut I made a few changes to make grid independent of the length of the data array. It's a kludge, but I have the responses populating a bigdata array, and the smaller data pulls from the bigdata array. The rest of the program uses the smaller data array, except for the scroll-bar measurement and a fe...
Convert hex string to int
... @AnumSheraz you don't want to convert to a long but to a byte array. See for example stackoverflow.com/questions/140131/…
– Denys Séguret
May 25 '18 at 11:35
...
How to set default value for form field in Symfony2?
...
Can be use during the creation easily with :
->add('myfield', 'text', array(
'label' => 'Field',
'empty_data' => 'Default value'
))
share
|
improve this answer
|
...
PostgreSQL wildcard LIKE for any of a list of words
...
Another option is to use ANY:
select * from table where value like any (array['%foo%', '%bar%', '%baz%']);
select * from table where value ilike any (array['%foo%', '%bar%', '%baz%']);
You can use ANY with any operator that yields a boolean. I suspect that the regex options would be quicker but...
How do I get formatted JSON in .NET using C#?
...
This works, but only if the json object isn't an array. If you know it'll be an array you could us JArray.Parse instead.
– Luke Z
Jun 8 '17 at 23:26
...
What's the purpose of the LEA instruction?
... set was designed to support high-level languages like Pascal and C, where arrays—especially arrays of ints or small structs—are common. Consider, for example, a struct representing (x, y) coordinates:
struct Point
{
int xcoord;
int ycoord;
};
Now imagine a statement like:
int y = ...