string-length

PHP - Get length of digits in a number

跟風遠走 提交于 2019-11-29 16:34:06
问题 I would like to ask how I can get the length of digits in an Integer. For example: $num = 245354; $numlength = mb_strlen($num); $numlength should be 6 in this example. Somehow I can't manage it to work? Thanks EDIT: The example code above --^ and its respective method mb_strlen(); works just fine. 回答1: Maybe: $num = 245354; $numlength = strlen((string)$num); 回答2: Accepted answer won't work with the big numbers. The better way to calculate the length of any number is to invoke floor(log10($num

JPasswordField KeyPress string length error?

你离开我真会死。 提交于 2019-11-29 14:00:20
I am trying to change background colors of a JPasswordField in Java Swing (Netbeans). Here's what I have: private void pstxtPasswordKeyPressed(java.awt.event.KeyEvent evt) { //Get string from password box userPassword = new String(pstxtPassword.getPassword()); //If password is 8+ characters //(one less because string counting begins at 0) if (userPassword.length() >= 7) { //Set password input box background color to green pstxtPassword.setBackground(Color.green); } else { //If password is less than 8 characters //Set password input box background color to red pstxtPassword.setBackground(Color

String length without len function

一曲冷凌霜 提交于 2019-11-29 08:48:51
Can anyone tell me how can I get the length of a string without using the len() function or any string methods. Please anyone tell me as I'm tapping my head madly for the answer. Thank you. >>> sum(map(lambda x:1, "hello world")) 11 >>> sum(1 for x in "foobar") 6 >>> from itertools import count >>> zip(count(1), "baz")[-1][0] 3 A "tongue twister" >>> sum(not out not in out for out in "shake it all about") 18 some recursive solutions >>> def get_string_length(s): ... return 1 + get_string_length(s[1:]) if s else 0 ... >>> get_string_length("hello world") 11 >>> def get_string_length_gen(s): ...

How to read input of unknown length using fgets

一世执手 提交于 2019-11-29 04:18:25
How am I supposed to read long input using fgets() , I don't quite get it. I wrote this #include <stdio.h> #include <stdlib.h> #include <string.h> int main() { char buffer[10]; char *input; while (fgets(buffer,10,stdin)){ input = malloc(strlen(buffer)*sizeof(char)); strcpy(input,buffer); } printf("%s [%d]",input, (int)strlen(input)); free(input); return 0; } #include <stdio.h> #include <stdlib.h> #include <string.h> int main(void) { char buffer[10]; char *input = 0; size_t cur_len = 0; while (fgets(buffer, sizeof(buffer), stdin) != 0) { size_t buf_len = strlen(buffer); char *extra = realloc

java.util.UUID.randomUUID().toString() length

淺唱寂寞╮ 提交于 2019-11-29 01:02:34
Does java.util.UUID.randomUUID().toString() length always equal to 36? I was not able to find info on that. Here it is said only the following: public static UUID randomUUID() Static factory to retrieve a type 4 (pseudo randomly generated) UUID. The UUID is generated using a cryptographically strong pseudo random number generator. Returns: A randomly generated UUID And that type 4 tells me nothing. I do not know what type 4 means in the case. Does java.util.UUID.randomUUID().toString() length always equal to 36? Yes!! it is. A UUID actually a 128 bit value (2 long). To represent 128 bit into

Does Java's toLowerCase() preserve original string length?

≡放荡痞女 提交于 2019-11-28 19:56:07
问题 Assume two Java String objects: String str = "<my string>"; String strLower = str.toLowerCase(); Is it then true that for every value of <my string> the expression str.length() == strLower.length() evaluates to true ? So, does String.toLowerCase() preserve original string length for any value of String? 回答1: Surprisingly it does not !! From Java docs of toLowerCase Converts all of the characters in this String to lower case using the rules of the given Locale. Case mapping is based on the

Display only 10 characters of a long string?

孤街浪徒 提交于 2019-11-28 17:21:57
How do I get a long text string (like a querystring) to display a maximum of 10 characters, using JQuery? Sorry guys I'm a novice at JavaScript & JQuery :S Any help would be greatly appreciated. If I understand correctly you want to limit a string to 10 characters? var str = 'Some very long string'; if(str.length > 10) str = str.substring(0,10); Something like that? And here's a jQuery example: HTML text field: <input type="text" id="myTextfield" /> jQuery code to limit its size: var elem = $("#myTextfield"); if(elem) elem.val(elem.val().substr(0,10)); As an example, you could use the jQuery

How do you get the length of a string?

家住魔仙堡 提交于 2019-11-28 15:31:31
问题 How do you get the length of a string in jQuery? 回答1: You don't need jquery, just use yourstring.length . See reference here and also here. Update : To support unicode strings, length need to be computed as following: [..."𠮷"].length or create an auxiliary function function uniLen(s) { return [...s].length } 回答2: The easiest way: $('#selector').val().length 回答3: jQuery is a JavaScript library. You don't need to use jQuery to get the length of a string because it is a basic JavaScript string

JPasswordField KeyPress string length error?

回眸只為那壹抹淺笑 提交于 2019-11-28 07:53:36
问题 I am trying to change background colors of a JPasswordField in Java Swing (Netbeans). Here's what I have: private void pstxtPasswordKeyPressed(java.awt.event.KeyEvent evt) { //Get string from password box userPassword = new String(pstxtPassword.getPassword()); //If password is 8+ characters //(one less because string counting begins at 0) if (userPassword.length() >= 7) { //Set password input box background color to green pstxtPassword.setBackground(Color.green); } else { //If password is

Automatic adjustment of margins in horizontal bar chart

半腔热情 提交于 2019-11-28 07:42:57
I need to produce a series of horizontal grouped bar charts. The barplot function does not automatically adjust the margins of the plot, therefore the text gets cut off. graphics.off() # close graphics windows test <- matrix(c(55,65,30, 40,70,55,75,6,49,45,34,20), nrow =3 , ncol=4, byrow=TRUE, dimnames = list(c("Subgroup 1", "Subgroup 2", "Subgroup 3"), c( "Category 1 Long text", "Category 2 very Long text", "Category 3 short text", "Category 4 very short text" ))) barplot(test, las=2, beside = TRUE, legend=T, horiz=T) I can't find an option to automatically move the plot further to the right,