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Can PostgreSQL index array columns?
... @IamIC does that mean I should not bother indexing an array of strings? And I should only index integer arrays?
– ryan2johnson9
Feb 10 '19 at 20:41
...
Is there a way of having git show lines added, lines changed and lines removed?
"git diff --stat" and "git log --stat" show output like:
5 Answers
5
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Is there a reason for C#'s reuse of the variable in a foreach?
... over iteration variable and it has an easy workaround:
foreach (var s in strings)
{
var s_for_closure = s;
query = query.Where(i => i.Prop == s_for_closure); // access to modified closure
My blog post about this issue: Closure over foreach variable in C#.
...
Input placeholders for Internet Explorer
...s, one I saw was jQuery-html5-placeholder.
I tried the demo out with IE9, and it looks like it wraps your <input> with a span and overlays a label with the placeholder text.
<label>Text:
<span style="position: relative;">
<input id="placeholder1314588474481" name="text" ...
How to give ASP.NET access to a private key in a certificate in the certificate store?
...ificateManager
{
public static X509Certificate2 GetCertificate(string caller)
{
AsymmetricKeyParameter caPrivateKey = null;
X509Certificate2 clientCert;
X509Certificate2 serverCert;
clientCert = GetCertificateIfExist("CN=127.0.0.1"...
Put icon inside input element in a form
...
Could you please describe more about top and left parameters (7px 7 px) and other attributes? That is must be helpful.
– QMaster
Jan 27 '14 at 5:15
...
关于php的socket初探 - PHP - 清泛IT论坛，有思想、有深度
..._enable($buffer, EV_READ | EV_PERSIST);
// we need to save both buffer and connection outside
self::$connections[$id] = $connection;
self::$buffers[$id] = $buffer;
}
function ev_error($buffer, $error, $id)
{
event_buffer_disable(self::$buffers[$id], EV_READ | EV_WRITE);
event_buf...
How to join two sets in one line without using “|”
Assume that S and T are assigned sets. Without using the join operator | , how can I find the union of the two sets? This, for example, finds the intersection:
...
Suppressing “is never used” and “is never assigned to” warnings in C#
...ll be returned. Just making it a public class that's empty with all public strings is nice short code and now no more warnings. Maybe using a dynamic class would be better as you don't have to explicitly state what's in the array, but I think this will be a nice reference for anyone hoping to use th...
What's a simple way to get a text input popup dialog box on an iPhone
...w *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex {
NSString* detailString = textField.text;
NSLog(@"String is: %@", detailString); //Put it on the debugger
if ([textField.text length] <= 0 || buttonIndex == 0){
return; //If cancel or 0 length string the stri...