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问题 I have a reactive form that on cancel has to set again the initial form values into the formGroup. import { Map } from "immutable"; @Input() data: any; public ngOnInit() { if (this.data && this.data.controls) { this.group = this.fb.group({ isActive: [this.data.isActive], items: this.fb.array(this.buildFormArray(this.data.controlPerformers)), }); // Deep copy of the formGroup with ImmutableJs this.originalFormData = Map(this.group).toJS(); } } public buildFormArray(controllers:

问题 I am working on a custom theme and on one of the pages i need to style the posts pages as follows: http://gyazo.com/e1f7cfc03c7ba3981188077afcdf0314 The grey box is an image and the red box is content. I need to use perhaps an odd/even Li/Ul pseudo class/selector but i have no idea how to do it. Could anyone offer me a way to start it up? I was thinking of using the Odd/Even pseudo class on UL to change the divs names however i can't think how to do it or where to start. Thanks! Edit: I am

问题 When I use my upload script to upload a PHP file, I can't upload a file with spaces in it (I get a 500 error). Is there a way so my code automatically puts an underscore in the file name instead of the space? All help is greatly appreciated. :) 回答1: Simply use str_replace to replace all white spaces with another string: $fileName = str_replace(" ", "_", $fileName); Doc: php.net 回答2: Use this regular expression.suppose your filename look like my pic.jpg (one spaces) or my pic.jpg (three spaces

问题 I'm developing an excel addin in c# and have to create a pivot table, which I don't know how to organize the data, how it should be. First of all the datasource: This is, how the final Pivot Table should looks like: But I only get something like this and I have no Idea where I have to how to change my code: Finally my code to arrange the data source columns: /* PIVOT RowFields */ Excel.PivotField nameField = pTable.PivotFields("Name"); nameField.Orientation = Excel.XlPivotFieldOrientation

问题 I'm developing an excel addin in c# and have to create a pivot table, which I don't know how to organize the data, how it should be. First of all the datasource: This is, how the final Pivot Table should looks like: But I only get something like this and I have no Idea where I have to how to change my code: Finally my code to arrange the data source columns: /* PIVOT RowFields */ Excel.PivotField nameField = pTable.PivotFields("Name"); nameField.Orientation = Excel.XlPivotFieldOrientation

问题 I want to get the highest role in the guild with discord.js message.guild.roles.highestRole This doesn't work. Any help would be appreciated. Thanks from now :) 回答1: For discord.js v12 / master use message.guild.roles.highest.name For discord.js v11.4.x / stable use message.guild.roles.sort((b, a) => a.position - b.position || a.id - b.id).first().name, this will sort the roles Collection by their position and then get the highest one, and return the name of it. 来源： https://stackoverflow.com

问题 I'm totally new to Clingo (and logic programming) and I'm looking for the best way to implement the following basic constraints: Q1. I have a predicate selected(T) where T ranges from 1 to N=5; how can I specify that exist at least one T such that selected(T) ? Q2. I have a binary predicate wrap(E,T) where E, T range from 1 to M, N; how can I specify that for each E exist at least one T such that wrap(E,T) ? Q3. How can I specify that if selected(a) OR selected(b) then selected(c) must be

问题 I'm developing an excel addin in c# and have to create a pivot table, which I don't know how to organize the data, how it should be. First of all the datasource: This is, how the final Pivot Table should looks like: But I only get something like this and I have no Idea where I have to how to change my code: Finally my code to arrange the data source columns: /* PIVOT RowFields */ Excel.PivotField nameField = pTable.PivotFields("Name"); nameField.Orientation = Excel.XlPivotFieldOrientation

问题 I have a 2D list of booleans. I want to select a random index from the the list where the value is False . For example, given the following list: [[True, False, False], [True, True, True], [False, True, True]] The valid choices would be: [0, 1] , [0, 2] , and [2, 0] . I could keep a list of valid indices and then use random.choice to select from it, but it seems unpythonic to keep a variable and update it every time the underlying list changes for only this one purpose. Bonus points if your

问题 Is it possible to draw an abline of a fit only in a certain range of x-values? I have a dataset with a linear fit of a subset of that dataset: # The dataset: daten <- data.frame(x = c(0:6), y = c(0.3, 0.1, 0.9, 3.1, 5, 4.9, 6.2)) # make a linear fit for the datapoints 3, 4, 5 daten_fit <- lm(formula = y~x, data = daten, subset = 3:5) When I plot the data and draw a regression line: plot (y ~ x, data = daten) abline(reg = daten_fit) The line is drawn for the full range of x-values in the