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问题 I started programming Rust a couple of days ago by working through the official documentation. Now I'm trying to challenge my understanding of Rust by working through the book "Exercises for Programmers" by Brian P. Hogan (The Pragmatic Programmers). The first exercise is to write a program that asks the user for a name and prints out a greeting using that name. Input, string concatenation and output should be done in three distinct steps. What is your name? Patrick Hello, Patrick, nice to

问题 I want to do something like this- "Error array cleared." | Out-File $ErrorLog $InfoLog -Append However it's not working. Is this possible without writing another line to output it to the other file? 回答1: One way is with a short function like this: function Out-FileMulti { param( [String[]] $filePath ) process { $text = $_ $filePath | foreach-object { $text | out-file $_ -append } } } Example: "Out-FileMultiTest" | Out-FileMulti "test1.log","test2.log" (Writes the string "Out-FileMultiTest" to

问题 syms x y z; solve(x==y+1, y^2==z,z==9) ans = x: [2x1 sym] y: [2x1 sym] z: [2x1 sym] and now I want to see the results like Mathematica outputting {{x->-2,y->-3,z->9},{x->4,y->3,z->9}} for Solve[{x == y + 1, y^2 == z, z == 9}, {x, y, z}] . The workspace window and then variable editor shows me this but I still cannot see the real values stored there. How can I see the output of Matlab in human-readable form aka beautified form? 回答1: The documentation of solve states: When solving a system of

问题 I have this code to calculate minimum number of coins from a sum with given list of denomiations. for eg : minimum change for 69 with denomiations [25,10,5,1] : [25, 25, 10, 5, 1, 1, 1, 1] def get_min_coin_configuration(sum=None, coins=None, cache={}): #if cache == None: # this is quite crucial if its in the definition its presistent ... # cache = {} if sum in cache: return cache[sum] elif sum in coins: # if sum in coins, nothing to do but return. cache[sum] = [sum] return cache[sum] elif min

问题 I have created a MediaWiki template named by the Hebrew letter א ( template:א ). Its content is: <code></code> I call it by {{א|SOME_textContent}} . Desired state I desire to show a single-line code iside regular text, for example: הסימן הזה = הינו סימן שוויון My problem My problem is that after I save a page with the above template call, I get an empty <code> tag content ( ). My question Why do I get empty <code> tag content ( ), instead getting SOME_textContent (the input I gave in call

问题 I wanted to know how it would be possible to get other input through the command line? I want to look for "-w" and a number, so it would look like "-w60" and "-s". This input is given through the command line, so it would look like this: c:\Users\Username\Desktop> wrapfile.exe -w5 -s test.txt Output should look like this: Hello , this is a test What the -w5 and -s mean is: -w5 = width (can only display 5 characters at a time) -s = spacing (Include spacing, so fit as many whole words as you

问题 I have a batch file that will format the date as YYYYMMDD and store it as a variable. However, when I want to generate a text output file with the date in the filename, it strips everything after the date. Can someone please help? You will notice in my example that you will get an output file with the text, but the filename will be the date and the .txt extension is stripped off. @echo off SETLOCAL ENABLEEXTENSIONS if "%date%A" LSS "A" (set toks=1-3) else (set toks=2-4) for /f "tokens=2-4

问题 I have a test.txt in my active directory.I need to create three methods: First one has to create an output file and reverse the order of the lines. Second the order of the words The third the order of the lines and the words. test.txt contains the input. I developed every method to work on its own but somehow when I call all three at the same time it doesnt seem to work. What am i doing wrong? This is my main: import java.io.*; public class DemoReverser { public static void main (String []

问题 from Bio import SeqIO from Bio import SeqRecord from Bio import SeqFeature for rec in SeqIO.parse("C:/Users/Siva/Downloads/sequence.gp","genbank"): if rec.features: for feature in rec.features: if feature.type =="Region": seq1 = feature.location.extract(rec).seq print(seq1) SeqIO.write(seq1,"region_AA_output1.fasta","fasta") I am trying to write the output to a FASTA file but i am getting error. Can anybody help me? This the error which i got Traceback (most recent call last): File "C:\Users

问题 I'm trying to accept a number in the range 1 to 300 from the user, then generate the amount of random numbers that was inputted. Then if the numbers generated are in the range 1 to 10, I add an asterisk to a String, then I do the same for 11 to 20 etc. all the way up to 100. Although I keep getting errors saying "; expected" in the results portion of my code. The output I'm trying to achieve is: 1 to 10 **************** 11 to 20 ****** 21 to 30 *************** 31 to 40 ******************** 41