大约有 31,840 项符合查询结果（耗时：0.0393秒） [XML]
What is Persistence Context?
...
can one PersisnteceContext have any EntityManager instances? And can one Entity Manager have any PersistenceContext? PersisntenceContext is only one for all application?
– Roberto
Feb 6 '1...
How do I split a string on a delimiter in Bash?
... -ra ADDR <<< "$IN"
for i in "${ADDR[@]}"; do
# process "$i"
done
It will parse one line of items separated by ;, pushing it into an array. Stuff for processing whole of $IN, each time one line of input separated by ;:
while IFS=';' read -ra ADDR; do
for i in "${ADDR[@]}"; do
...
Is it better to call ToList() or ToArray() in LINQ queries?
...tly to the number of elements.
To meet this constraint ToArray often does one more allocation than ToList. Once it has an array that is big enough it allocates an array which is exactly the correct size and copies the elements back into that array. The only time it can avoid this is when the grow...
Track all remote git branches as local branches
...-v HEAD | grep -v master`; do git branch --track ${i#remotes/origin/} $i; done
credits: Val Blant, elias, and Hugo
before git 1.9.1
Note: the following code if used in later versions of git (>v1.9.1) causes
(bug) All created branches to track master
(annoyance) All created local branch names...
Android getting value from selected radiobutton
...
In case, if you want to do some job on the selection of one of the radio buttons (without having any additional OK button or something), your code is fine, updated little.
public class MainActivity extends Activity {
@Override
protected void onCreate(Bundle savedInstance...
Looking for files NOT owned by someone
...ies that can be negated ("reversed") using the "!" operator. On the prompt one must however escape the negation with a backslash as it is a shell metacharacter. Result:
find . \! -user foo -print
share
|
...
What differences, if any, between C++03 and C++11 can be detected at run-time?
...w how likely you are to have this working on a real implementation though. One that exploits auto
struct x { x(int z = 0):z(z) { } int z; } y(1);
bool isCpp0x() {
auto x(y);
return (y.z == 1);
}
The following is based on the fact that operator int&& is a conversion function to int&am...
How do I do string replace in JavaScript to convert ‘9.61’ to ‘9:61’?
...
This won't work if we try to replace more than one value at a time. :(
– vissu
May 28 '12 at 13:06
56
...
PHP PDO returning single row
...
Just fetch. only gets one row. So no foreach loop needed :D
$row = $STH -> fetch();
example (ty northkildonan):
$dbh = new PDO(" --- connection string --- ");
$stmt = $dbh->prepare("SELECT name FROM mytable WHERE id=4 LIMIT 1");
$stmt...
Git submodule inside of a submodule (nested submodules)
...
As mentioned in Retrospectively add --recursive to a git repo
git submodule update --init --recursive
should work.
share
|
impro...