separator

问题 I've written a function that extracts double from a string. Like asfas123123afaf to 123123 or afafas12312.23131asfa to 12312.23131 using the point as a decimal separator. Here is the code: double get_double(const char *str, char sep) { char str_dbl[80]; size_t i,j; char minus; double dbl; for (minus = 1, i = j = 0; i < strlen(str); ++i) { if ( (str[i] == '-' && minus) || (str[i] >= '0' && str[i] <= '9') || (str[i] == 'e' || str[i] == 'E') ) { str_dbl[j++] = str[i]; minus = 0; } } str_dbl[j] =

问题 In Python, I have a file which the words are separated by | , for example: city|state|zipcode . My file reader is unable to separate the words. Also, I want my file reader to start on line 2 rather than line 1. How do I get my file reader to separate the words? import os import sys def file_reader(path, num_fields, seperator = ',', header = False): try: fp = open(path, "r", encoding="utf-8") except FileNotFoundError: raise FileNotFoundError("Unable to open file.") else: with fp: for n, line

问题 Team, i have another scenario, i need to split 4 columns and also 8 columns split, i changed the beginning code declare @numCols int = 4 i tried to change the final join statement, not able to achieve, Can you help on this. i could not able to join the single join statement at the end of the function declare @String varchar(max) set @String='sunday,9,meals,EYR,sunday,9,meals,USD,monday,9,meals,USD,friday,9,meals,USD' begin declare @numCols int = 4 declare @itr int = 0 declare @SplittedValues

问题 I am very new to programming and I'm starting out with Python. I tried to look up my question here but didn't really find anything. I'm trying to work a very simple print command but I'm getting an error for some reason that I don't understand. last = 'smith' middle = 'paul' first = 'john' print(first.capitalize(), middle.capitalize(), last.capitalize(), sep='\t') According to the answer in the book, this should be right, but every time I try to run it, I get an error with the 'sep': print

问题 I have created a Horizontal Separator in a VBox . Following is the code: Separator s = new Separator(Orientation.HORIZONTAL); s.setStyle("" + "-fx-border-width: 1px;" + "-fx-border-color: black;" + "-fx-padding: 0px;" + ""); getChildren().add(s); I want to remove the space inside the Separator . So I set the CSS property -fx-padding: 0px; but it doesn't seem to work. How can I do it??!! Here is the image Separator 回答1: The separator consists out of two Elements. The Separator root node with

问题 Is it possible in R to save a data frame (or data.table) into a textfile that contains different separators for various columns? For example: Column1[TAB]Column2[,]Column3 ? [] indicate the separators, here a TAB and comma. 回答1: The function write.table accepts only one separator. MASS::write.matrix can do the trick: require(MASS) m <- matrix(1:12, ncol = 3) write.matrix(m, file = "", sep = c("\\tab", ","), blocksize = 1) returns 1\tab5,9 2\tab 6,10 3\tab 7,11 4\tab 8,12 but as the

问题 I'm working on WPF Window Application which uses ContextMenu . My ContextMenu in XAML (in Window.Resources): <ContextMenu x:Key="menuList" Placement="Bottom" > <ContextMenu.ItemContainerStyle> <Style TargetType="{x:Type MenuItem}"> <Setter Property="Header" Value="{Binding Name}"/> <EventSetter Event="Click" Handler="cm_RefreshChannelNotification"/> <Setter Property="IsChecked" Value="{Binding CFiltered}" /> <Setter Property="IsCheckable" Value="True"/> <Setter Property="StaysOpenOnClick"

问题 I'm having a really weird issue with table view separators. I have set the separator color to a dark gray which works great below the cells, but for some reason, there is a white separator before my section header (see the screenshot, above November). When I set the separator style to none, the line disappears which indicates that it is a separator. How can I remove this white separator line? 回答1: - (UIView *)tableView:(UITableView *)tableView viewForFooterInSection:(NSInteger)section {

问题 I would like to know if there is a way to get a thousand separator in a SQL Query ? As i'm a bit lazy, I want to build a request which can allow me to copy/paste the result to my boss without adding this separator :D The request looks like this : SELECT COALESCE(Customer, 'TOTAL') AS "Customer", CONCAT( COUNT( SegmentId ) , ' bookings' ) AS "Nb bookings", CONCAT( REPLACE( SUM( Price ) , '.', ',' ) , ' €' ) AS "Total (€)", CONCAT( ROUND( ( SUM( Price ) / ( SELECT SUM( Price ) FROM my_db WHERE

问题 In Java, when I do: "a/b/c/d".replaceAll("/", "@"); I get back a@b@c@d But when I do: "a/b/c/d".replaceAll("/", File.separator); It throws a StringIndexOutOfBoundsException, and I don't know why. I tried looking this up, but it wasn't very helpful. Can anyone help me out? 回答1: It says it right there in the documentation: Note that backslashes (\) and dollar signs ($) in the replacement string may cause the results to be different than if it were being treated as a literal replacement string;