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Check if $_POST exists
...g to check whether a $_POST exists and if it does, print it inside another string, if not, don't print at all.
14 Answers
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Invalid postback or callback argument. Event validation is enabled using '
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The problem is that ASP.NET does not get to know about this extra or removed listitem.
You got an number of options (listed below):
Disable eventvalidation (bad idea, because you lose a little of security that come with very little cost).
Use ASP.NET Ajax UpdatePanel. (Put the listb...
What is Weak Head Normal Form?
...thunks. In this case, t1 would be your 0 (or rather, a thunk to 0 given no extra unboxing)
seq and $! evalute WHNF. Note that
f $! x = seq x (f x)
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Fastest way to check if a string is JSON in PHP?
I need a really, really fast method of checking if a string is JSON or not. I feel like this is not the best way:
30 Answer...
What is a PDB file?
...is necessary for the file and line numbers to be present in the StackTrace string. I included the PDB file in the executable folder and now all is fine.
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jQuery UI dialog positioning
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Darn, that's nice but it's deprecated- "Note: The String and Array forms are deprecated." api.jqueryui.com/dialog/#option-position So you'd need to use the position object my/at/of thingy. See the link there about "jQuery UI Position". You could get something like position...
PHP equivalent of .NET/Java's toString()
How do I convert the value of a PHP variable to string?
24 Answers
24
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“Items collection must be empty before using ItemsSource.”
...ou caught the error yet? -->
</ItemsControl>
The bug? The extra > after the initial opening <ItemsControl> tag! The < got applied to the built-in Items collection. When the DataContext was later set, instant crashola. So look out for more than just errors surround you...
Java executors: how to be notified, without blocking, when a task completes?
...blic class GetTaskNotificationWithoutBlocking {
public static void main(String... argv) throws Exception {
ExampleService svc = new ExampleService();
GetTaskNotificationWithoutBlocking listener = new GetTaskNotificationWithoutBlocking();
CompletableFuture<String> f = Completable...
multi-step registration process issues in asp.net mvc (split viewmodels, single model)
...ne for each step:
public class Step1ViewModel
{
[Required]
public string SomeProperty { get; set; }
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}
public class Step2ViewModel
{
[Required]
public string SomeOtherProperty { get; set; }
...
}
and so on. All those view models could be backed by a main wizard view ...