c# Optional Func Parameter -

-

I have the following function definition in C #: 

  public static TResult SomeParentFunctionName & lt; TSource, TResult & gt; (TSource SomeValue, & lt; TSource, TResult & gt; ChildFunction1 of the ceremony & lt; TSource, TResult & gt; ChildFunction2 of the ceremony)   
 This function  SomeValue  According to my business rules, I  always   ChildFunction1    / Code> is required, but only need to run  occasionally  to  childfun 2 .  
 Can I do an optional parameter for  ChildFunction2 ? How do I do this? And how do I know if it has been passed in the  
 option I have considered.  
 1) I can create two with  SomeParentFunctionName ,  ChildFunction2  and without one  
 2) I There is an empty ceremony that will just do nothing to transmit -. But it is not that good practice.  
 
 Note: Those who want to start yelling on this question, if you can not help, then just do not do it.   
 
 
 Sure, just set to null:  
  public static TResult SomeParentFunctionName & LT; TSource, TResult & gt; (TSource SomeValue, & lt; TSource, TResult & gt; ChildFunction1 of the ceremony, & lt; TSource, TResult & gt; ChildFunction2 = null of the ceremony) ... if (childfunction 2! = Null) childfunction 2 (); }   
 If you want to pass in the function for  ChildFunction2 , then go ahead and do this if you do not want to give anything for this, the function Leave it while calling.  
 It was actually actually calling you -

Comments

Post a Comment

Popular posts from this blog

ios - Adding an SKSpriteNode to SKScene from a child SKSpriteNode -

-
I have a SKScene where I am adding an SKSpriteNode I have subclassed the SKSpriteNode class to create this node. In the subclass I am defining some SKActions on Sprite. What do I want to do when the end of this phantom ends the SKAction sequence, then I add a new Prayer node to this scene. How is this possible. The following code is mine: The code for the sequence is that I'm running on the Scansprinitode subclass (TEMissileNode): - SKAction * moveDown = [SKAction moveToY: Self.position.y - 20 Duration: 0.2]; SKAction * animation = [SKAction animateWithTextures: textures timePerFrame: time / 7]; SKAction * moveMissileProjectile = [SKAction Moving: Pointoffscreen Term: Time]; SKAction * group = [SKAction group: @ [animation, movement projectile]]; SKAction * Sequence = [SKAction Sequence: @ [Hilldown, Group, [SKAction removalFromParent]]]; [Self run action: sequence]; From the main scene, I call those actions that execute these tasks TEMissileNode * missile = [tmissil...
Read more

Matlab transpose a table vector -

-
An embarrassing simple question seems to be, but how can I move a Matlab table vector? aTableT = aTable '; I tried a standard syntax for the simple interaction of a line vector to a line vector aTable : ATableT = reshape (aTable, 1, Height (aTable)); and aTableT = rot90 (aTable); According to the head, the last time table should work for table, see. However, I get this error code: Error type in using table / permit (line 396) Undefined function 'permute' for the input arguments. Error in rot 90 (line 29) b = magnitude (b, [2 1 3: ndims (a)]); NB: fliplr is not useful either pretty sure I have covered clear angles - any ideas? Thanks! Try changing your table into an array, move it, then back to a table In other words, try doing this: aTableArray = table2array (aTable); ATableT = array 2table (aTableArray. '); I have also read the document for rot90 , and it says that rot90 is definitely working for tables Do, and I find you...
Read more

c# - Textbox not clickable but editable -

-
I have a small form with 10 text boxes, I have set them in the correct tab order. I want them on my tab service I was wondering if there is a way to set the text box so that they can be selected for editing until they are tabbed. That is ... I do not want the end user to edit the text box to click on them, I just want to make them editable through tabu. this should do the trick public partial category poor text box: Text Box {Safe Override Zero WndProc (Ref: Message Message) {if (m.msg == (Int) WM.LBUTTONDOWN) {Return; // mount down events} base.WndProc (ref m); }} Window message enum can be found. How to do this without anherizing: text box : class EatMouseDown: netwindows {safe override zero WndProc (ref message message) {if (m.msg == (int) WM.LBUTTONDOWN) {return; } Base.WandProc (Ref M); }} Safe Override Zero Onload (EventEurge E) {base.OnLoad (e); How to do this without any part: left a clean part, whatever is important, this can be a buggy but it works R...
Read more