mysql - Perl: Breaking out of foreach loop when last array element is encountered -


Pearl Nob here. I have a small script (see below) that I am using to create a MySQL INSERT statement. 

  Use strict; My @records = qw / record1 record2 / 3 records; My $ insert = "include in table prices"; Enter $ $ before my $ record (@ Records). {$ Insert. = "('". $ Record. "'), \ N"; } Print "$ insert \ n"; Enter

current output 

  table values ​​('Record 1'), ('Record 2'), ('Record 3'), < / Code> <
 
 I should know how to break the last element of the  @records  array and instead of  attach  ,  
 
 include the desired output 
 
  in the table values ​​('Record 1'), ('Record 2'), ('Record 3');    
 
 
 You can do this  map  and  < Join / Code>  
  my @records = qw / Record1 Record2 Record3 /; My $ insert = "include in table prices"; $ Insert = Join ',', map {'('. $ Dbh-> quotation ($ _). ')'} @records; $ Insert = ';'; # This line is not required  
 
 The stuff of  $ dbh  is better than just quoting because it handles bad things for you  Map  is not very different from a  foreach  loop, and  joining  will take care of putting a comma in between the elements, not the previous one.

Comments

Post a Comment

Popular posts from this blog

ios - How do I use CFArrayRef in Swift? -

I am using Objective-class in my Swift Project through a bridging header. The method signature looks like this: - Some cement (some type) some parameters; I started by getting an example of class, calling method, and storing the value: var myInstance = MyClassWithThatMethod (); Var cfArr = myInstance.someMethod (some value); Then try to get the value in the array: var valueInArrayThatIWant = CFArrayGetValueAtIndex (cfArr, 0); However, I get the error unmanaged & lt; Cfarray & gt; Not like 'CFArray' . Unmanaged & lt; Cfarray & gt; also means? I looked, but I do not need to change the array in a fast array (though it would be good). I need to be able to get value from the array. I also tried CFArray method to pass in a function: func doSomeStuffOnArray (myArray: NSArray) {} Although I get the same error when using: doSomeStuffOnArray (cfArr); // unmanaged & lt; CFArray & gt; I am using CFArray because I want to sto...
Read more

eclipse plugin - Run java code error: Workspace is closed -

To create an automated project, I created a plug-in project with the following dependencies: Org.eclipse.core.resources org.eclipse.equinox.registry org.eclipse.core.runtime and the following The Java class is located in the src folder: Package Examiner; Import org.eclipse.core.resources.IProject; Import org.eclipse.core.resources.IWorkspaceRoot; Import org.eclipse.core.resources.ResourcesPlugin; Import org.eclipse.core.runtime.CoreException; Import org.eclipse.core.runtime.IProgressMonitor; Import org.eclipse.core.runtime.NullProgressMonitor; Public class tes {public static zero main (string [] args) {// TODO auto generated method stub IProgressMonitor progress monitor = new NullProgressMonitor (); IWorkspaceRoot root = ResourcesPlugin.getWorkspace (). GetRoot (); Ipoject project = root.jetproject ("desired projectname"); Try {Project.create (progress monitor); Project.open (progressMonitor); } Grip (CoreException E) {// TODO Auto generated blocking block e....
Read more

c - Error on building source code in VC 6 -

When I create my project in VC6, the BScMKE reports the following error Linking .. Creating Library ... .. / ... / PB / Bean / Debub / ICEERP.Lib and Object ........ P.B. / Bean / DBube / ICREPlay.APP Browse information file ... BSMMK: ​​error can not be read from BK 1505: file '../../PB/bin/TmpOut/ICReplay/Debug/ICReplay_PB.bsc' Error executing bscmake.exe Can someone help me? 2 Reason for reference from: "ICReplay_PB .bsc "file will be corrupted The trunk of the file will be happening with the compiler running out of disk space or is being interrupted when creating .sbr file I think this answer will help you!
Read more