numeric

Bypass php is_numeric() function is possible?

由 ぐ巨炮叔叔 提交于 2019-12-07 14:21:17
问题 I am currently looking for a pass (not blind) high level of category sql injection application dvwa. Can not find the solution even if there are some ideas and tools that make life easier. source code form is as follows for the fans: if (isset($_GET['Submit'])) { // Retrieve data $id = $_GET['id']; $id = stripslashes($id); $id = mysql_real_escape_string($id); if (is_numeric($id)){ $getid = "SELECT first_name, last_name FROM users WHERE user_id = '$id'"; $result = mysql_query($getid) or die('

CEdit numeric validation event C++ MFC

由 ≡放荡痞女 提交于 2019-12-07 10:57:01
问题 I have a CEdit text box which is a part of a property pane and only allows numeric values (positive integers). The box works fine when people enter non-numeric values, but when they delete the value in the box a dialog pops up saying: "Please enter a positive integer." Here is the situation: 1. I have a number (say 20) in the box. 2. I delete the number. 3. I get the error dialog. Could anybody tell me how I can intercept this event and put a default value in there? Here is what my property

prevent long running averaging from overflow?

由 与世无争的帅哥 提交于 2019-12-07 09:46:44
问题 suppose I want to calculate average value of a data-set such as class Averager { float total; size_t count; float addData (float value) { this->total += value; return this->total / ++this->count; } } sooner or later the total or count value will overflow, so I make it doesn't remember the total value by : class Averager { float currentAverage; size_t count; float addData (float value) { this->currentAverage = (this->currentAverage*count + value) / ++count; return this->currentAverage; } } it

Asp.net textbox in Android phone with numeric keyboard selected by default

由 ∥☆過路亽．° 提交于 2019-12-07 08:46:29
We are developing a regular asp.net website (no Textviews), for one of the text boxes I need the textbox to open a numeric keyboard by default, is there a way to achieve this? Below code works perfectly for iPhone / iPad but does not default to numeric keyboard for Android. <asp:TextBox runat="server" type="number" pattern="\d*" onKeypress="if(event.keyCode < 48 || event.keyCode > 57){return false;}" /> Adroid version : 2.2.1 EDIT : When I use an HTML input box with type="number" it works perfectly. I need a way to use asp.Net textbox and see the numeric keyboard. Here is my solution: <div

PostgreSQL adds trailing zeros to numeric

由 余生长醉 提交于 2019-12-07 01:20:02
问题 Recently I migrated a DB to PostgreSQL that has some columns defined as numeric(9,3) and numeric(9,4) . In testing the app I have found that when data is saved to these columns there are trailing zeros being added to the value inserted. I am using Hibernate, and my logs show the correct values being built for the prepared statements. An example of the data I am inserting is 0.75 in the numeric(9,3) column and the value stored is 0.750 . Another example for the numeric(9,4) column: I insert

How to get numeric keypad arrows working with java applications on Linux

由 不问归期 提交于 2019-12-07 01:11:55
问题 The arrow keys on the numeric keypad do not work with Java applications on Linux. Strangely enough, the Home, End, PgUp, PgDn, Ins, Del all work. This is especially annoying when using Intellij for programming. How do you get the arrow keys working? 回答1: IntelliJ (and CLion) provides the functionality to configure key mappings. Under File->Settings->Keymap->Editor actions it is possible to assign both of the keystrokes ("normal" up/down/left/right and the keypad ones) to corresponding actions

Jquery check if value is numeric

由 你。 提交于 2019-12-06 16:50:59
问题 I was wondering if anybody had a quick and dirty jquery method that will check if a value is numeric or not? I was thinking about using a regex type method to check the value, if not do not submit the form. I was using jquery validation, but I am running into issues just loading jquery validation. I just have one value that I want to make sure is numeric. 回答1: Sure, use jQuery's isNumeric() function. $.isNumeric("-10"); // true $.isNumeric(16); // true $.isNumeric(0xFF); // true $.isNumeric(

VBA How to identify if a column's contents is numerical?

由 狂风中的少年 提交于 2019-12-06 15:59:48
I have got a qestion regarding Excel VBA. I have to perform this task automatically. Is there any possibility to check whether an entire column's contents (not talking about a cell format) is numerical (containing only numbers)? Of course, I know that an alternative way is avaible, i.e. going down cell by cell. I know that a set filter can identify whether the column is numerical. How to get this information via VBA? COUNT counts numbers; COUNTA counts numbers and text. =Count(A:A)=CountA(A:A) ... returns true if column A contains numbers only. In VBA as, Debug.Print CBool(Application.Count

Turkish Identity Number Verification in Swift

由 你。 提交于 2019-12-06 11:24:01
How can I make sure that the given text is Turkish Identity Number? I have seen js version here and phthon version here Turkish Identity Verification is not checks only if its numeric, it has some other functions too. Let me be more clear, It is numeric and has 11 digits. For example Let assume that first 9 digits are represented by d, and the last ones represented by c: Identity Number = d1 d2 d3 d4 d5 d6 d7 d8 d9 c1 c2 10th digit must be, c1 = ( (d1 + d3 + d5 + d7 + d9) * 7 - (d2 + d4 + d6 + d8) ) mod10 11th must be, c2 = ( d1 + d2 + d3 + d4 + d5 + d6 + d7 + d8 + d9 + c1 ) mod10 and it never

Solving a system of transcendental equations with python

由 情到浓时终转凉″ 提交于 2019-12-06 07:01:42
问题 Assuming I have the following four equations: cos(x)/x = a cos(y)/y = b a + b = 1 c sinc(x) = d sinc(y) for unknown variables x, y, a and b . Note that cos(x)/x=a has multiple solutions. Similar goes for variable y . I am only interested in x and y values, which are first positive roots (if that matters). You can safely assume a, b, c and d are known real constants, all positive. In Mathematica the code to solve this would look something like: FindRoot[{Cos[x]/x == 0.2 a + 0.1, Cos[y]/y == 0
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