string

问题 I am trying to read a file line by line, and tokenize each line, which have strings separated by spaces and tabs. However, when I run my program, I get the a Segmentation Fault error when I try to print the token. I don't understand why this is happening, as I am using a buffer as the string to tokenize and checking if the token is null. Below is my code: #include <stdio.h> #include <stdlib.h> #define MAX_LINE_LENGTH 70 int main(void) { FILE * testFile; char buf[MAX_LINE_LENGTH]; testFile =

问题 There is an object in PHP named $item , and in this object I have properties of title , title_cn, title_tw And I would like to create an function that auto generate the properties based on the language, so I coding like this: <?= $item->title . set_lang(); ?> And the function: function set_lang() { $CI =& get_instance(); $lang = $CI->session->userdata('site_lang'); if ($lang == "english") { return ""; } else if ($lang == "zh_tw") { return "_tw"; } else if ($lang == "zh_cn") { return "_cn"; }

问题 I have this block of code that reliably creates a string object. I need to write that object to a file. I can print the contents of 'data' but I can't figure out how to write it to a file as output. Also why does "with open" automatically close a_string? with open (template_file, "r") as a_string: data=a_string.read().replace('{SERVER_NAME}', server_name).replace('{BRAND}', brand).replace('{CONTENT_PATH}', content_path).replace('{DAMPATH}', dampath).replace('{ENV}', env).replace('{CACHE

问题 for a specific column of a pandas dataframe I would like to make the elements all uppercase and replace the spaces import pandas as pd df = pd.DataFrame(data=[['AA 123',00],[99,10],['bb 12',10]],columns=['A','B'],index=[0,1,2]) # find elements 'A' that are string temp1 = [isinstance(s, str) for s in df['A'].values] # Make upper case and replace any space temp2 = df['A'][temp1].str.upper() temp2 = temp2.str.replace(r'\s', '') # replace in dataframe df['A'].loc[temp2.index] = temp2.values I get

问题 Description of the file: The STL file consists of solid <solid_name> facet normal n1 n2 n3 (the triangles normal vector) outerloop (one of the markers I want to read) v1 x1 y1 z1 v2 x2 y2 z2 (three vertex of the triangle/facet) v3 x3 y3 z3 endloop end facet endsolid The idea is to read the information in each line. First, I'm trying !to read the first line:solid program Leitura !use, intrinsic :: trim implicit none integer ilo, ierror, ihi, ios, iunit, num_text, len_blanck, len_word, len_text

问题 python search character "x" next step delete this character "x" + character "x" -1 postion in string Example x="1. 520 2. 529" I am going to search in x "." and delete "." and number before "." in end I want it look like x=" 520 529" Before I created this topic I only find replace one character for one character 回答1: import re re.sub(r'(.\.)', '', a) Where a is the string you want to replace in. 来源： https://stackoverflow.com/questions/43957288/python-delete-2-character-in-string

问题 I'm going through the Python tutorial and have no idea why my code isn't working. I know I need to tell Python to print an integer manually but I have already put str(sum(ages)) . Can anyone tell me why this is happening? ages = ['24','34','51','36','57','21','28'] print('The oldest in the group is ' + str(max(ages)) + '.') print('The youngest in the group is ' + str(min(ages)) + '.') print('The combined age of all in the list is ' + str(sum(ages)) + '.') Error: File "list2.py", line 4, in

问题 Im trying to Add a few methods to the Javascript String Object. one of the main methods im trying to add is a substring count function String.prototype.substring_count = function(delimiter){ return {THIS IS WHAT I NEED THE STRING FOR}.split(delimiter).length; } Where do you access the string in the String object? 回答1: Use this . In the documentation, it is mentioned If the method is on an object's prototype chain, this refers to the object the method was called on in this case, the string

问题 I am wondering how I can figure out if a website provide photo or video by checking its URL. I investigated the website that I am interested in and found that most of the links I have are in this form: (I am not sure if I can actually name the website, so for now I just wrote it in a form of an example): http://www.example.com/abcdef where example is the main domain and abcdef is a number like 69964. The interesting pattern I found is that after entering this URL, if it actually has video the

问题 I am wondering how I can figure out if a website provide photo or video by checking its URL. I investigated the website that I am interested in and found that most of the links I have are in this form: (I am not sure if I can actually name the website, so for now I just wrote it in a form of an example): http://www.example.com/abcdef where example is the main domain and abcdef is a number like 69964. The interesting pattern I found is that after entering this URL, if it actually has video the