Jump to content

Blank String Cast To Int Is A Number?

Recommended Posts

Local $number = ""
If isNumber(Int($number)) And  Then MsgBox(0,"","Blank is a number!")

The above snippet evaluates to true.  I'm not sure if this is a bug.

The below snippet is the workaround to avoid the problem of an empty string provided evaluating to a number.

Local $number = ""
If IsNumber(Int($number)) And StringLen(StringStripWS($number, $STR_STRIPALL)) Then MsgBox(0, "", "Blank is a number!")
Link to comment
Share on other sites

  • Moderators


Once again Autoit's lack of typing claims a victim! :D

The blank string is automatically converted to a number by Int - and becomes numeric 0 as there is no numeric content at the start (see Number in the Help file). Using string/numeric functions on the opposing datatype nearly always ends in tears - best to force the conversion yourself beforehand. ;)


Public_Domain.png.2d871819fcb9957cf44f4514551a2935.png Any of my own code posted anywhere on the forum is available for use by others without any restriction of any kind

Open spoiler to see my UDFs:


ArrayMultiColSort ---- Sort arrays on multiple columns
ChooseFileFolder ---- Single and multiple selections from specified path treeview listing
Date_Time_Convert -- Easily convert date/time formats, including the language used
ExtMsgBox --------- A highly customisable replacement for MsgBox
GUIExtender -------- Extend and retract multiple sections within a GUI
GUIFrame ---------- Subdivide GUIs into many adjustable frames
GUIListViewEx ------- Insert, delete, move, drag, sort, edit and colour ListView items
GUITreeViewEx ------ Check/clear parent and child checkboxes in a TreeView
Marquee ----------- Scrolling tickertape GUIs
NoFocusLines ------- Remove the dotted focus lines from buttons, sliders, radios and checkboxes
Notify ------------- Small notifications on the edge of the display
Scrollbars ----------Automatically sized scrollbars with a single command
StringSize ---------- Automatically size controls to fit text
Toast -------------- Small GUIs which pop out of the notification area


Link to comment
Share on other sites

Link to comment
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now

  • Recently Browsing   0 members

    • No registered users viewing this page.
  • Create New...