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Best way to get identity of inserted row?
...the current IDENTITY value for a table that you have not inserted a record into."
The OUTPUT clause of the INSERT statement will let you access every row that was inserted via that statement. Since it's scoped to the specific statement, it's more straightforward than the other functions above. How...
Does Java have a HashMap with reverse lookup?
...s in this answer: stackoverflow.com/questions/787446/… (and the original interview). That's biased towards Google, for obvious reasons, but even so I think it's safe to say you're better off with Google Collections nowadays.
– Jonik
Nov 5 '09 at 18:21
...
Choice between vector::resize() and vector::reserve()
...fragile or not according to how difficult you've made it for yourself to maintain the required property. Something like x.reserve(x.size() + newdata); vector<int>::iterator special_element = get_special_element(x); for (int i = 0; i < newdata; ++i) { if some_function(i, special_element) x.p...
How do I handle newlines in JSON?
I've generated some JSON and I'm trying to pull it into an object in JavaScript. I keep getting errors. Here's what I have:
...
关于php的socket初探 - 更多技术 - 清泛网 - 专注C/C++及内核技术
... {
// 接受客户端连接
$newconn = socket_accept($socket);
$i = (int) $newconn;
$reject = '';
if (count(self::$connections) >= self::$maxconns) {
$reject = "Server full, Try again later./n";
}
// 将当前客户端连接放入 socket_select 选择
self::$connections[$i] = $newc...
jQuery see if any or no checkboxes are selected
...h would be 0 otherwise). To make it a bit clearer, here's the non boolean converted version:
function howManyAreChecked(formID) {
return $('#'+formID+' input[type=checkbox]:checked').length;
}
This would return a count of how many were checked.
...
Java optional parameters
...ate optional parameters in Java:
Method overloading.
void foo(String a, Integer b) {
//...
}
void foo(String a) {
foo(a, 0); // here, 0 is a default value for b
}
foo("a", 2);
foo("a");
One of the limitations of this approach is that it doesn't work if you have two optional parameters...
Setting the filter to an OpenFileDialog to allow the typical image formats?
...
I love this so much that I've converted it into the world's most disgusting one-liner! Dim ofd As New OpenFileDialog() With {.Filter = ImageCodecInfo.GetImageEncoders().Aggregate("All Files (*.*)|*.*", Function(s, c) $"{s}|{c.CodecName.Substring(8).Replac...
How to set top-left alignment for UILabel for iOS application?
...rticalAlignmentMiddle,
VerticalAlignmentBottom,
} VerticalAlignment;
@interface SOLabel : UILabel
@property (nonatomic, readwrite) VerticalAlignment verticalAlignment;
@end
SOLabel.m
@implementation SOLabel
-(id)initWithFrame:(CGRect)frame
{
self = [super initWithFrame:frame];
...
What does the question mark operator mean in Ruby?
...ever there are several other uses of the ? in Ruby (is a ternary operator, converting a character to its ASCII integer, usage in test, in RegEx'es, etc.) many of which are covered in the other answers here.
– Karl Wilbur
Sep 11 '15 at 20:36
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