syntax

问题 Here is my code: Get-Content 'hist4.txt' | ForEach-Object { $_.split(" ")[0]} | ForEach-Object { $rgbArray += $_ for( $i = 1; $i -le $rgbArray.length; $i++ ) { $rgbA0=$rgbArray[$i] $rgbA1=$rgbArray[$i + 1] //compare A0 and A1... } } The text file contents: 1 500 21 456 33 789 40 653 54 900 63 1000 101 1203 I want to load the text file. Get-Content 'hist4.txt' It has two elements on each line. I need the first element. ForEach-Object { $_.split(" ")[0]} I need to store the first element of

问题 Here is my code: Get-Content 'hist4.txt' | ForEach-Object { $_.split(" ")[0]} | ForEach-Object { $rgbArray += $_ for( $i = 1; $i -le $rgbArray.length; $i++ ) { $rgbA0=$rgbArray[$i] $rgbA1=$rgbArray[$i + 1] //compare A0 and A1... } } The text file contents: 1 500 21 456 33 789 40 653 54 900 63 1000 101 1203 I want to load the text file. Get-Content 'hist4.txt' It has two elements on each line. I need the first element. ForEach-Object { $_.split(" ")[0]} I need to store the first element of

问题 I'm getting Invalid location tag Warning on some tags with Eclipse Neon.3. For example: <a ...><h1></h1></a> is valid on HTML5 but eclipse showing Invalid location tag warning for <H1> . I've seen another question on Why does Eclipse creates warning on HTML script tag?. I don't know it's the same problem as this or not (that question is implying to the Undefined attribute name Warning). but asked on +6 years ago. Another old Question (+5 years ago) with about the same problem: error on

问题 When I use the format that I left below, returns in error, I know that something is missing adjusting in relation to WHERE AND ... But I could not fit to supply the error. I would like some help knowing what I missed. "select Col1,Col2,Col3 where Col1 is not null Order by Col1, Col2 AND Col1 > date'"&TEXT(today()-1,"yyyy/mm/dd")&"'" The date and time for Col1 and Col2 are like this: With this formula, I hope I can filter the imported data only for those that have the date of the current day

问题 I can't figure out how to set emacs to use just two colors, one for comments and the other for the regular code across all language modes. There is, of course the possibility to set the colors of each block except comment to the second color, but I'm not sure what ALL available blocks are. Until now all I found is (setq-default global-font-lock-mode nil) but this also kills coloring for comments. I guess this must be fairly easy for time-proven emacs warriors. 回答1: See the angry fruit salad

问题 Here is my implementation file: using namespace std; #include <iostream> #include <iomanip> #include <string> #include <stack> //line 5 #include "proj05.canvas.h" //----------------Constructor----------------// Canvas::Canvas() //line 10 { Title = ""; Nrow = 0; Ncol = 0; image[][100]; // line 15 position.r = 0; position.c = 0; } //-------------------Paint------------------// line 20 void Canvas::Paint(int R, int C, char Color) { cout << "Paint to be implemented" << endl; } The errors I'm

问题 I prefer to get info from the source, for this case this is ISO-IEC 14882, where erase method is described as the following: "iterator erase(const_iterator position); iterator erase(const_iterator first, const_iterator last); Effects: Invalidates iterators and references at or after the point of the erase. Complexity: The destructor of T is called the number of times equal to the number of the elements erased, but the move assignment operator of T is called the number of times equal to the

问题 Can someone please clarify these 2 notations in Python: [ [] ] * n : apparently this creates n references to the same object (in this case, an empty list). In which situations is this useful? (i,) : I have seen some people use this "trailing comma" notation (example: Generating all size k subsets of {0, 1, 2, ... n-1} in the definition of the sets function). What does it mean? 回答1: [ [] ] * n creates n references to the same empty list object. This is almost always a bug, since usually you'll

问题 How do I highlight all occurrences of a list of words in a text. For example, i do have a list of strings ("if", "else", "then", "while", "true"). I do need to find them in a TextBox and highlight them (foreground + background color). Examples as how it should look: The current approach is to override TextBox and do "something" in the OnTextChange event. 回答1: see this question: How to highlight portion of a Rich TextBox WPF control if there are more than 2 spaces? and this open source control

问题 How do I highlight all occurrences of a list of words in a text. For example, i do have a list of strings ("if", "else", "then", "while", "true"). I do need to find them in a TextBox and highlight them (foreground + background color). Examples as how it should look: The current approach is to override TextBox and do "something" in the OnTextChange event. 回答1: see this question: How to highlight portion of a Rich TextBox WPF control if there are more than 2 spaces? and this open source control