integer

Check if a string variable has an integer value

由 筅森魡賤 提交于 2019-12-23 06:58:55
问题 I am working on a project which allows kids to send a message to Santa. Unfortunately, if they enter a string instead of an integer in the AGE field, the program crashes and returns Conversion from string "[exampleString]" to type 'Double' is not valid. Is there any way to check if they have entered an integer or not? This is the code. If childAge > 0 And childAge < 150 Then fmSecA2 = "Wow! You are already " & childAge & " years old? You're growing to be a big " & childGender & " now! " Else

C variable confusion

由 巧了我就是萌 提交于 2019-12-23 05:34:10
问题 In one of my assignments I am seeing this line used: int index = -1, k; Im not sure what is happening when there are to entries for the one variable. What exactly is the variable "index" holding when it has two entries? 回答1: In C, the comma operator , has lower precedence than the assignment operator = . As such, the expression int index = -1, k; is parsed as //The parentheses are not legal in C, but it's what the parser does. int ((index = -1), k); You see, that the line declares variables

Pascal - String to LongWord

由 为君一笑 提交于 2019-12-23 05:22:54
问题 I have number as String. How to convert that string to LongWord? I know how to convert it to integer. But integer is to small for me. 回答1: Actually you can use StrToInt. The resulting value will overflow (i.e. become negative for values above $7fffffff, you might want to disable overflow checking), but when it is casted to longword, you will get the correct value. Although the low level Val might be safer: var x: longword; e: word; begin Val('$9fffffff', x, e); writeln(x); end. 来源： https:/

what is the use of type = number allow to type 0123456789.Ee-+ even it returning invalid value?

由 陌路散爱 提交于 2019-12-23 05:19:22
问题 var app = angular.module("myShoppingList", []); app.controller("myCtrl", function($scope) { $scope.addMe=""; }); <html> <head> <link rel="stylesheet" href="style.css"> <script src="https://cdnjs.cloudflare.com/ajax/libs/angular.js/1.6.5/angular.js"></script> </head> <body> <div ng-app="myShoppingList" ng-controller="myCtrl"> <input type="number" ng-model="addMe"> <p>{{addMe}}</p> </body> </html> Actually input type = number does not allow most of the special characters to enter. But it's only

How to split large integer into an array of 8-bit integers

由 a 夏天 提交于 2019-12-23 04:29:49
问题 Wondering how to convert the output of arbitrarily sized integers like 1 or 12345 or 5324617851000199519157 to an array of integers. [1] // for the first one // [probably just a few values for the second 12345...] [1, 123, 255, 32, ...] // not sure here... I am not sure what the resulting value would look like or how to compute it, but somehow it would be something like: A bunch of 8-bit numbers that can be used to reconstruct (somehow) the original arbitrary integer. I am not sure what

Pass value outside of public void onClick

由 ☆樱花仙子☆ 提交于 2019-12-23 04:27:06
问题 So im sure this is probably a fairly easy question but I am stumped because I am a beginner. I am looking to pass a value from one class to another, and I have my helper function down and working just fine. If i create an integer outside of my onClick I can pass it no problem. If I create it inside the onClick though it doesn't seem to make it out. package com.movi.easypar; //import java.util.logging.Handler; import android.app.Activity; import android.app.AlertDialog; import android.content

how to validate integer datatype in oracle procedure

由 ╄→尐↘猪︶ㄣ 提交于 2019-12-23 04:18:28
问题 I have a parameter with integer data type in a Oracle procedure which produces number of rows mentioned in the parameter into a table. I want to validate the parameter with its data type. that means, if the parameter value is 5.0 then it creates 5 rows and if the value is 5.2 then it produces error. How do I create this logic? 回答1: Oddly, PL/SQL does not enforce INTEGER parameters. I would expect Oracle to either implicitly convert the data or throw an error if 5.2 was passed to an INTEGER

Setting a range for an Integer in Java [duplicate]

由 自作多情 提交于 2019-12-23 03:58:17
问题 This question already has answers here : Java - limit number between min and max (7 answers) Closed 3 years ago . I have the attribute: private int Number; I want to limit this number so that it can only be between the values 1 - 3. Would I do this within a method when I set the value or is there a way of predefining that I only want values 1 - 3 to be valid values for this integer? Many thanks in advance. Edit: I want to take an input of a number between 1 -3. I've tried using a while, do

How can I bind a pixel array of integer colors to a texture using the Android NDK?

由 生来就可爱ヽ(ⅴ＜●) 提交于 2019-12-23 03:47:18
问题 I'm trying to port my Java OpenGL code on Android to the Native SDK and I need an IntBuffer implementation. Basically what I do in Java to load up an arbitrary integer RGBA pixel color array into a texture is: // pixel array pixelIntArray = new int[width * height]; bb = ByteBuffer.allocateDirect(pixelIntArray.length * 4); bb.order(ByteOrder.nativeOrder()); // native buffer pixelBuffer = bb.asIntBuffer(); // push integer array of pixels into buffer pixelBuffer.put(pixelIntArray); pixelBuffer

How to integrate :missed days with :committed days in habits.rb?

由 依然范特西╮ 提交于 2019-12-23 02:58:12
问题 How can we integrate t.integer :missed with t.text :committed so that when a User checks off he :missed 3 :committed days in a :level he has to restart the :level ? for each :missed day he checks off, an additional :committed day is added back into the :level so that he must make it up before advancing? Each habit has 5 levels before "Mastery" is achieved! class Habit < ActiveRecord::Base belongs_to :user before_save :set_level acts_as_taggable serialize :committed, Array def self.comitted
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