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Difference between array_map, array_walk and array_filter
...
Changing Values:
array_map cannot change the values inside input array(s) while array_walk can; in particular, array_map never changes its arguments.
Array Keys Access:
array_map cannot operate with the array keys, array_walk can.
Return Value:
array_map returns a new array...
Infinite Recursion with Jackson JSON and Hibernate JPA issue
...s for perfect answer. Btw, I came with another solution: you can simply avoid creating getter for this value, so Spring won't be able to access it while creating JSON (but I don't think that it suits every case, so your answer is better)
– Semyon Danilov
Feb 28...
ASP.NET Repeater bind List
...t null values you may want to refactor to this (.NET 6+)
<asp:Repeater ID="repeater" runat="server">
<ItemTemplate>
<%# Container.DataItem?.ToString() ?? string.Empty%>
</ItemTemplate>
</asp:Repeater>
Note if you are using less than .NET 6 you cannot ...
How can I display a list view in an Android Alert Dialog?
In an Android application, I want to display a custom list view in an AlertDialog.
11 Answers
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Team city unmet requirement: MSBuildTools12.0_x86_Path exists
...copied over the files from my x64 machine based on this article so that I didn't need to install vs2012 (though, I did have the change the path to remove x86 on the 32bit machine):
...
How to pass json POST data to Web API method as an object?
...thod parameter like this
public class CreateUserViewModel
{
public int Id {set;get;}
public string Name {set;get;}
public List<TagViewModel> Tags {set;get;}
}
public class TagViewModel
{
public int Id {set;get;}
public string Code {set;get;}
}
and your web api end point is li...
How disable Copy, Cut, Select, Select All in UITextView
...able pasteboard operations is to create a subclass of UITextView that overrides the canPerformAction:withSender: method to return NO for actions that you don't want to allow:
- (BOOL)canPerformAction:(SEL)action withSender:(id)sender
{
if (action == @selector(paste:))
return NO;
ret...
Creation timestamp and last update timestamp with Hibernate and MySQL
...private Date created;
private Date updated;
@PrePersist
protected void onCreate() {
created = new Date();
}
@PreUpdate
protected void onUpdate() {
updated = new Date();
}
}
or you can use the @EntityListener annotation on the class and place the event code in an external cl...
Does a UNIQUE constraint automatically create an INDEX on the field(s)?
...e keys are in fact B-tree type indexes.
A composite index on (email, user_id) is enough, you don't need a separate index on email only - MySQL can use leftmost parts of a composite index. There may be some border cases where the size of an index can slow down your queries, but you should not worry ...
How to programmatically set style attribute in a view
...mmatically; you can set the look of a screen, or part of a layout, or individual button in your XML layout using themes or styles. Themes can, however, be applied programmatically.
There is also such a thing as a StateListDrawable which lets you define different drawables for each state the your B...