大约有 46,000 项符合查询结果（耗时：0.0587秒） [XML]
When to use SELECT … FOR UPDATE?
Please help me understand the use-case behind SELECT ... FOR UPDATE .
2 Answers
2
...
windows batch SET inside IF not working
...y.
Therefore the delayedExpansion syntax exists, it uses ! instead of % and it is evaluated at execution time, not parse time.
Please note that in order to use !, the additional statement setlocal EnableDelayedExpansion is needed.
setlocal EnableDelayedExpansion
set var1=true
if "%var1%"=="true...
How to add an auto-incrementing primary key to an existing table, in PostgreSQL?
...e with existing data. Is there a way to add a primary key without deleting and re-creating the table?
4 Answers
...
Angularjs $q.all
...es only function-level scopes:
Read this article about javaScript Scoping and Hoisting.
See how I debugged your code:
var deferred = $q.defer();
deferred.count = i;
console.log(deferred.count); // 0,1,2,3,4,5 --< all deferred objects
// some code
.success(function(data){
console.log(defe...
Splitting String with delimiter
... 1128-2 so that I can have two separate values. For example, value1: 1128 and value2: 2, so that I can then use each value separately. I have tried split() but with no success. Is there a specific way Grails handles this, or a better way of doing it?
...
Draw line in UIView
...our case (horizontal line) is to add a subview with black background color and frame [0, 200, 320, 1].
Code sample (I hope there are no errors - I wrote it without Xcode):
UIView *lineView = [[UIView alloc] initWithFrame:CGRectMake(0, 200, self.view.bounds.size.width, 1)];
lineView.backgroundColor...
BroadcastReceiver with multiple filters or multiple BroadcastReceivers?
I have an Android Activity that needs to catch two different broadcasts. My current approach is to have a single BroadcastReceiver within the Activity and catch both the broadcasts with it:
...
How to sum array of numbers in Ruby?
... edited Jul 26 '19 at 16:51
Fernando Briano
7,5091313 gold badges5353 silver badges7474 bronze badges
answered Oct 8 '09 at 16:07
...
When monkey patching an instance method, can you call the overridden method from the new implementat
...
EDIT: It has been 9 years since I originally wrote this answer, and it deserves some cosmetic surgery to keep it current.
You can see the last version before the edit here.
You can’t call the overwritten method by name or keyword. That’s one of the many reasons why monkey patching...
IIS7 Settings File Locations
... does IIS7 saves its configuration for each virtual directory/ application and its physical path?
2 Answers
...