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javascript - Angular 4 Filter Search Custom Pipe

So I am trying to build a custom pipe to do a search filter of multiple values in a ngFor loop. I have looked ... else from my code let me know. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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Assign to a bash array variable indirectly, by dynamically constructed variable name

Bash script to create multiple arrays from csv with unknown columns. I am trying to write a script to compare two csv ... F, '{print $1}') fi See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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c# - Perform screen-scape of Webbrowser control in thread

I am using the technique shown in WebBrowser Control in a new thread Trying to get a screen-scrape of a webpage ... to avoid such an approach. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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jquery - Converting a recursive function into an asynchronous CPS implementation (javascript)

Here's my function. function duplicate_step_through_highlighted (element_jq, target_jq, char_cb) { console.log( element_jq ... the elements? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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php - Echo menu tree with recursive function

Problem: I can't think of way make a recursion function to my specific situation. Situation: Mysql DB id | root | ... need to print it all out? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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python - return max value from panda dataframe as a whole, not based on column or rows

I am trying to get the max value from a panda dataframe as whole. I am not interested in what row or ... the max from an entire dataframe. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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javascript - Vuejs typescript this.$refs.<refField>.value does not exist

While rewriting my VueJs project in typescript, I came across a TypeScript error. This is a part of the component that ... > </div> </template> See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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ruby - What does the unary question mark (?) operator do?

I saw this operator in HAML code. I wonder what it is for. I see the following works: > ?{ => ... language orthogonality? What is the benefit? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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Use onactivityresult android

I want to call a method from mainactivity in other activities. For that, I've researched a lot and found that ... to get the pressed button. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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android - How to clear specific activity from the stack history?

Suppose I have an application containing activities named A,B,C,D. Now, consider A has been launched as the ... me to resolve this problem? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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c# - InvalidProgramException / Common Language Runtime detected an invalid program

This is the strangest programming issue I have seen in a long time. I am using Microsoft Visual C# 2010 Express, ... scratch a couple of times. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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LINQ not updating on .SubmitChanges()

Is there any reason something like this would not work? This is the logic I have used many times to ... detect any updates being required. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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css - display:inline resets height and width

I have created example at http://jsfiddle.net/GKnkW/2/ html <!DOCTYPE html> <html> <head> <title>Test< ... workaround for this weird behavior ? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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Backwards-compatible input calls in Python

I was wondering if anyone has suggestions for writing a backwards-compatible input() call for retrieving a ... Anyone have any suggestions? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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angular - Can't bind to 'for' since it isn't a known native property angular2

I have to Create a list of checkboxes dynamically so i have used *ngFor to iterate the array of objects everything ... wrong here in my code ? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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scala - How do I make a function involving futures tail recursive?

In my Scala app, I have a function that calls a function which returns a result of type Future[T]. I ... FactorialCalc.factorial(4), 5.seconds) See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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reactjs - Can't send a post request when the 'Content-Type' is set to 'application/json'

I am working on a React application and I am using fetch to send a request. I have made a Sign Up form ... kind of help will be appreciated. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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RegEx No more than 2 identical consecutive characters and a-Z and 0-9

Edit: Thanks for the advice to make my question clearer :) The Match is looking for 3 consecutive characters ... help would be much appreciated! See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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285 views

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asp.net mvc - DateTime (date and hour) validation with Data Annotation

I have the following code: [DisplayName("58.Date and hour of birth")] [DataType(DataType.DateTime, ErrorMessage = " ... (dd/mm/yyyy hh:mm) See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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python - how to read numpy 2D array from string?

how can I read a numpy array from a string? take a string like: [[ 0.5544 0.4456], [ 0.8811 0.1189]] ... in (np.load only works for files.) See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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sql server - Entity Framework Core 2.0: How to configure abstract base class once

I have a base model: public abstract class Status { public string updateUserName { get; set; } } ... additional information would be helpful. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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437 views

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jquery - How to hide/remove a DIV when empty

I have some server side HTML output I cannot deal with using pure CSS, essentially the DIV sometimes holds: <div>< ... to remove it. Any ideas? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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comparison - Comparing floating point numbers in C

I've got a double that prints as 0.000000 and I'm trying to compare it to 0.0f, unsuccessfully. Why is ... to determine if your double is zero? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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373 views

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devtools - Install Rtools on R version 3.0.2

I've installed devtools for R, but when I call the library with: library(devtools) I get the following ... the devtools library. Thank you! See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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How exactly does String.split() method in Java work when regex is provided?

I'm preparing for OCPJP exam and I ran into the following example: class Test { public static void main(String args[]) ... just don't get it... See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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media player - Android MediaPlayer Problems :"Error (-38 , 0) " and "stop called in state 1"

It's no sound from my device even the emulator. Actually, at the line "mMediaPlayer.create(this, musicIds[0]); " ... (338): Error (-38,0) See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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376 views

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c - Are "malloc(sizeof(struct a *))" and "malloc(sizeof(struct a))" the same?

This question is a continuation of Malloc call crashing, but works elsewhere I tried the following program and I ... and found no warnings! See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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956 views

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c++ - Loop until integer input is in required range fails to work with non-digit character inputs

I'm having a problem with what should be incredibly simple code. I want to take in an integer between 1 and 3 with ... " << input << endl; } See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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