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问题 How can I delete one or more rows and/or columns from an array? 回答1: Working with: julia> array = [1 2 3 4; 5 6 7 8; 9 10 11 12; 13 14 15 16] 4×4 Array{Int64,2}: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 To delete a single row (here row 2): julia> newarray = array[1:end .!= 2, :] 3×4 Array{Int64,2}: 1 2 3 4 9 10 11 12 13 14 15 16 To delete a single column (here column 3): julia> newarray = array[:, 1:end .!= 3] 4×3 Array{Int64,2}: 1 2 4 5 6 8 9 10 12 13 14 16 To delete a single row and a single

问题 How can I delete one or more rows and/or columns from an array? 回答1: Working with: julia> array = [1 2 3 4; 5 6 7 8; 9 10 11 12; 13 14 15 16] 4×4 Array{Int64,2}: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 To delete a single row (here row 2): julia> newarray = array[1:end .!= 2, :] 3×4 Array{Int64,2}: 1 2 3 4 9 10 11 12 13 14 15 16 To delete a single column (here column 3): julia> newarray = array[:, 1:end .!= 3] 4×3 Array{Int64,2}: 1 2 4 5 6 8 9 10 12 13 14 16 To delete a single row and a single

问题 I am having issues which seem to be related calling a specific API asynchronously using HttpClient - the strange thing is that it doesn't happen all the time and can be solved by refreshing the page (sometimes once, sometimes multiple times). I thought this could be a local issue but hosting on Azure produces the same results. Raw exception details: System.Net.Sockets.SocketException (11001): No such host is known at System.Net.Http.ConnectHelper.ConnectAsync(String host, Int32 port,

问题 I am having issues which seem to be related calling a specific API asynchronously using HttpClient - the strange thing is that it doesn't happen all the time and can be solved by refreshing the page (sometimes once, sometimes multiple times). I thought this could be a local issue but hosting on Azure produces the same results. Raw exception details: System.Net.Sockets.SocketException (11001): No such host is known at System.Net.Http.ConnectHelper.ConnectAsync(String host, Int32 port,

问题 I am having trouble to prepare a summary table using dplyr based on the data set below: set.seed(1) df <- data.frame(rep(sample(c(2012,2016),10, replace = T)), sample(c('Treat','Control'),10,replace = T), runif(10,0,1), runif(10,0,1), runif(10,0,1)) colnames(df) <- c('Year','Group','V1','V2','V3') I want to calculate the mean, median, standard deviation and count the number of observations by each combination of Year and Group . I have successfully used this code to get mean , median and sd :

问题 I'm communicating with a webservice in SOAP with php. Here's my code : $data = array('name' => 'test', 'age' => 20); $WDSL = 'http://xxx.xxxxx.xxx/wdsl.ibs?wsdl'; $SOAP = new SoapClient($WDSL, array('trace' => true)); $RESULT = $SOAP->__soapCall('Some_Service', $data); For some reason, the XML is wrong : <?xml version="1.0" encoding="UTF-8"?> <SOAP-ENV:Envelope xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/" xmlns:ns1="urn:Some_Crap"><SOAP-ENV:Body><ns1:Some_Service/><param1>test<

问题 I'm trying to pass an id in my routerLink, how could I concatenate it? <a routerLink="['/details', {{data.id}}]"> </a> doesnt work. Do you have solutions? Thanks in advance 回答1: There you go. <a [routerLink]="['/details', data.id]"> Link </a> 回答2: Parameters go as second item in the array syntax to router link, like this: [routerLink]="['/details', data.id] Read more here 来源： https://stackoverflow.com/questions/53523472/angular-variable-into-routerlink

问题 I'm communicating with a webservice in SOAP with php. Here's my code : $data = array('name' => 'test', 'age' => 20); $WDSL = 'http://xxx.xxxxx.xxx/wdsl.ibs?wsdl'; $SOAP = new SoapClient($WDSL, array('trace' => true)); $RESULT = $SOAP->__soapCall('Some_Service', $data); For some reason, the XML is wrong : <?xml version="1.0" encoding="UTF-8"?> <SOAP-ENV:Envelope xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/" xmlns:ns1="urn:Some_Crap"><SOAP-ENV:Body><ns1:Some_Service/><param1>test<

问题 Given these classes: @Value private static class Message { private final String type; private final MyType message; } @Value public class MyType { private final String foo; } Jackson will produce: { "Type" : "Test", "Message" : {"foo" : "bar"} } Is there some type of annotation or instruction I can give to Jackson to ask it to serialize the nested complex type as a string, e.g. the desired JSON would be: { "Type" : "Test", "Message" : "{\"foo\" : \"bar\"}" } I tried both of these annotations

问题 I am having issues which seem to be related calling a specific API asynchronously using HttpClient - the strange thing is that it doesn't happen all the time and can be solved by refreshing the page (sometimes once, sometimes multiple times). I thought this could be a local issue but hosting on Azure produces the same results. Raw exception details: System.Net.Sockets.SocketException (11001): No such host is known at System.Net.Http.ConnectHelper.ConnectAsync(String host, Int32 port,