string

Introduction When it comes to string manipulation, the StringBuilder class becomes a powerful tool in any developer’s arsenal. However, in B4A (Basic4Android), the built-in StringBuilder has its limitations. The Issue with B4A’s Default StringBuilder Read-Only Length: B4A’s default...

Written last century, resurrection prompted by related question in Spanish forum It is a very nice algorithm, even if I do say so myself. ? Dim S1 As String = "Now is the time for all good men to come to the aid of the party" Dim S2 As String = "It was the time for good women to come to the...

Moving data from a text file to SQLite database. If I have a line in the text file like for example this: 123, "John,", Smith Then what would be the fastest way to split this line in these 3 fields: 123 John, Smith As these files can be large, I need to process the file line by line, so I...

A veces encuentro código con líneas algo así Hoy estuve investigando sobre el uso de las cadenas interpoladas, pero no me quedo claro. Por lo que le pedí a Chatgpt que me explicara su uso. Dejo este texto como ayuda a otros, porque hoy si aprendí como de emplean y lo uitiles que son las...

Hola a todos. Estoy tratando de pasar parte del contenido de un archivo csv a una base de dato sqlite. Para ello escribí una funcion de prueba. Este es el código. Public Sub CargaDatos Dim SU As StringUtils Dim AirPorts As List = SU.LoadCSV(File.DirAssets, "ejemplo.csv", ",")...

Hi, Is there any way to define a string with a certain length ? Like in Visual Basic reserved as string * 3 => length = 3 I have big data coming in as Hex String, it woud be much easier to handle with a structure of certain string length. VISUAL BASIC Public Type flagstringstruct 'Value...

I can do this with something like this: Sub CStr(oVal As String) As String Return oVal End Sub [\CODE] This is fine if oVal has a string assigned to it, eg: oVal = "abc" However, this won't work if oVal has nil assigned to it, so for example: [CODE] Dim o As Object Log(CStr(o)) [\CODE]...

Different languages use different Unicode Ranges to display their characters. Based on these ranges we can assume the Language/Script of a string. Sub identifyLang(text As String) As String Dim lang = "Unknown" Dim code As Int = Asc(text) Select True Case code >=...

Hi everyone... i've this string 0x33303a43363a46373a30303a39353a3641 that represents some bytes.. how can i transform it in actual bytes? i tried with for loops, byteconverter, arrays etc... nothing works like I need...

Hello, I have 3 table columns named "ColA", ColB" and "ColC" where ColC is type BLOB and I like to store and read images in/from it. For a solution I like to export these table columns to a CVS File or import the CVS file values to the table columns. I know how to convert the image to a byte...

I want to convert string to b4rstring, for example, to use the JSON Library in inline C. But the following code seems to be wrong. MCU is constantly reset. Sub Process_Globals Public Serial1 As Serial Type TestC(A1 As String,A2 As Byte) End Sub Private Sub AppStart...

Since before KVS was born I have saved default field data by assigning each field to a List element then saving to file with File.WriteList() Apparently that does not work when the string data contains CRLF because the line are divided up and added as individual list elements. So I gave KVS a...

I have a long number from database. The number is 100000000 I need yo do some mathematics operation When I put it into Double, its turn into 1.0E8. After I've done with the mathematics operation, I need to convert the number into string. But it still retain 1.0E8 format. How do I change it back...

Hello guys, Is there any way to perform a calculation with the elements in a string for instance, i have "2x10/20" it can be any other calculus, like "(234/403)-20*50" but they are string can I somehow convert them to numbers to perform the operations ? Thanks

Hello, I have defined a string variable with 2 dimensions. If I execute this code in B4i I get a different result like in b4j. I would expect the same result in b4i as in B4j. Can someone explain me what I am doing wrong? dim lv_array(2,2) as string lv_array(0,0) = "containername"...

Hi everyone, i was using the UDPSocket to send some packets to my server. I noticed something weird, if i try to compile my code the compiler crashes saying: Sub Button1_Click For i=0 To 100 UDPSocket1.Initialize("UDP", 0, 2048) Dim Packet As UDPPacket Dim...

I'm having a hard time grasping how to save settings that are shared by multiple applications. Like let's say I have a company that has 5 applications and I want my users to login to just one of them, but maintain login across all 5. I know how to process login. I know how to save a map to a...

Hello all, Fairly new to B4A, so this may be a simple question... but it's got me stumped. I am using a SearchView as found in the SearchViewExample (found on the forum). However, I am having difficulty implementing it into my own code. What I wish to do is take the selected text (from the...

I have a for-loop where I fill with data a string variable (that I have already Created). It takes 6 to 10 secs to complete. Log($"BEFORE loop- $time{DateTime.Now}"$) Dim n As Int = crs.RowCount - 1 Dim lvHtml As String = $"<!DOCTYPE...

Hi Everyone! Gotten stuck trying to receive some data from a post request and put it into a database, I get data like this; 'PIRTIMEOUT 001306894=5000' I need to put the 5000 (**** in the code)part into the database the other number being the device number (Num, in the code) it has to go...