for-loop

问题 Description: I want to write vhdl code that finds the largest integer in the array A which is an array of 20 integers. Question: what should my algorithm look like, to input where the sequential statements are? my vhdl code: highnum: for i in 0 to 19 loop i = 0; i < 20; i<= i + 1; end loop highnum; This does not need to be synthesizable but I dont know how to form this for loop a detailed example explaining how to would be appreciated. 回答1: First of all you should know how have you defined

问题 I try to darken a variable number of divs like that with following code: @mixin color-divs ($count, $baseName, $startcolor) { $color: $startcolor; @for $i from 0 through $count { $color: darken($color, 9%); ##{$baseName}_#{$i} { background-color:$color; } } } With that code I was expecting, that the variable $color is changed with every iteration but this didn't work as expected. The value is fix after the fist initialisation and every element has the same color. Is there a way to workarround

问题 for /r %%i in (*) do (echo %%i) Results in %%i was unexpected at this time Why? 回答1: You must be trying to run the command from the command line and not from within a batch file. Use a single % instead of two when running from the command line. for /r %i in (*) do (echo %i) Type HELP FOR from the command line and read the 3rd paragraph. 回答2: Syntax: FOR /R [[drive:]path] %%parameter IN (set) DO command Need the path before %%i... which is why it's Unexpected If you want to do * for current

问题 I'm working on getting accustomed to shell scripting and ran across a behavior I found interesting and unexplained. In the following code the first for loop will execute correctly but the second will not. declare letters=(a b c d e f g) for i in {0..7}; do echo ${letters[i]} done for i in {0..${#letters[*]}}; do echo ${letters[i]} done The second for loop results in the following error: syntax error: operand expected (error token is "{0..7}") What confuses me is that ${#letters[*]} is clearly

问题 I'm working on getting accustomed to shell scripting and ran across a behavior I found interesting and unexplained. In the following code the first for loop will execute correctly but the second will not. declare letters=(a b c d e f g) for i in {0..7}; do echo ${letters[i]} done for i in {0..${#letters[*]}}; do echo ${letters[i]} done The second for loop results in the following error: syntax error: operand expected (error token is "{0..7}") What confuses me is that ${#letters[*]} is clearly

问题 I'm taking a class on C, and running into a segmentation fault. From what I understand, seg faults are supposed to occur when you're accessing memory that hasn't been allocated, or otherwise outside the bounds. 'Course all I'm trying to do is initialize an array (though rather large at that) Am I simply misunderstanding how to parse a 2d array? Misplacing a bound is exactly what would cause a seg fault-- am I wrong in using a nested for-loop for this? The professor provided the clock

问题 I'm taking a class on C, and running into a segmentation fault. From what I understand, seg faults are supposed to occur when you're accessing memory that hasn't been allocated, or otherwise outside the bounds. 'Course all I'm trying to do is initialize an array (though rather large at that) Am I simply misunderstanding how to parse a 2d array? Misplacing a bound is exactly what would cause a seg fault-- am I wrong in using a nested for-loop for this? The professor provided the clock

问题 The committee changed the range-based for loop from: C++11: { auto && __range = range_expression ; for (auto __begin = begin_expr, __end = end_expr; __begin != __end; ++__begin) { range_declaration = *__begin; loop_statement } } to C++17 : { auto && __range = range_expression ; auto __begin = begin_expr ; auto __end = end_expr ; for ( ; __begin != __end; ++__begin) { range_declaration = *__begin; loop_statement } } And people said that this will make implementing Ranges TS easier. Can you

问题 new at this, please tell me if I'm leaving information out or anything like that. The code I'm working on can be seen here: http://codepen.io/hutchisonk/pen/mVyBde and I have also pasted the relevant section of javascript below. I'm having trouble understanding why this code is behaving as it is. Quick outline - I have defined a few variables at the top, made a function that fetches the data I need and builds it into a pretty little list. This seems to be working as planned. With the function

问题 new at this, please tell me if I'm leaving information out or anything like that. The code I'm working on can be seen here: http://codepen.io/hutchisonk/pen/mVyBde and I have also pasted the relevant section of javascript below. I'm having trouble understanding why this code is behaving as it is. Quick outline - I have defined a few variables at the top, made a function that fetches the data I need and builds it into a pretty little list. This seems to be working as planned. With the function