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gnuplot store one number from data file into variable

OSX v10.6.8 and Gnuplot v4.4 I have a data file with 8 columns. I would like to take the first ... found where a numeric expression was expected See Question&Answers more detail:os...

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

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ios - App Transport Security has blocked a cleartext HTTP resource

I am using Socket.IO library in swift and I keep getting this error: App Transport Security has blocked a cleartext ... , but it did not help. 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 - Are primary keys passé?

What unique functionality do Primary Keys provide? While i titled the question with tongue firmly planted in cheek, my ... to defining a PK. See Question&Answers more detail:os...

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

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apache tomcat 9.x not working with eclipse & Java 10.0.1

I've installed apache-tomcat-9.0.7 on my windows machine and have following environment configurations: echo ... solution for this issue ? See Question&Answers more detail:os...

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

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haskell - Converting IO Int to Int

I've created a combobox from converting a xmlWidget to a comboBox with the function castTocomboBox and now I want to ... I use Glade and gtk2hs. See Question&Answers more detail:os...

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

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What are the semantics of the 'is' operator in Python?

How does the is operator determine if two objects are the same? How does it work? I can't find it documented. See Question&Answers more detail:os...

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

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performance - recursive function vs setInterval vs setTimeout javascript

i am using NodeJs and need call a infinite function, but i dont know what is the best for a optimal ... to optimize the javascript performance. See Question&Answers more detail:os...

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

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show data in table view in android

I want to get data from database in my android table view. Should I use loop? Is static good for this? See Question&Answers more detail:os...

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

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mysql - Database Design: Multiple tables vs a single table

I am making a website where there are different types of items such as blogs, posts, articles and so on. A user ... it helps, I am using MySql 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 - Replacing variables in a string

I am working on a multilingual website in PHP and in my languages files i often have strings which contain ... which aren't yet determined. See Question&Answers more detail:os...

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

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"Calling this from your main thread can lead to deadlock and/or ANRs while getting accesToken" from GoogleAuthUtil(Google Plus integration in Android)

In my android application, I am trying to get AccessToken from GoogleAuthUtil as below : accessToken = ... 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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c++ - When is explicit move needed for a return statement?

In a comment to another question Jonathan Wakely responds to my statement: You never need explicit move for a ... rules or of unique_ptr?? See Question&Answers more detail:os...

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

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iphone - indentationLevelForRowAtIndexPath not indenting custom cell

I have overridden the tableView:indentationLevelForRowAtIndexPath method in my UITableViewController derived class as follows: ... return cell; 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# - Convert Degrees/Minutes/Seconds to Decimal Coordinates

In one part of my code I convert from decimal coordinates to degrees/minutes/seconds and I use this: ... /seconds to decimal coordinates? See Question&Answers more detail:os...

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

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What's the upper limit on GDI objects for one process in Windows 7?

Have an application with a GDI leak that will eventually hit 10,000 allocated GDI objects and crash. I ... individual application's hard limit? 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# - Reset RTF in RichTextBox?

I'm trying to "reset" the formatting in my RichTextBox (WinForms, not WPF). I was previously using ... that produces undesirable flashing)? See Question&Answers more detail:os...

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

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forms - What's the point of having hidden input in HTML? What are common uses for this?

I don't see the benefit of having hidden input? If you set the value of the hidden input why not just use that ... but I just don't know them. See Question&Answers more detail:os...

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

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270 views

1 answer

Configuration parameter work_mem in PostgreSQL on Linux

I have to optimize queries by tuning basic PostgreSQL server configuration parameters. In documentation I've came ... runtime: 30496.100 ms See Question&Answers more detail:os...

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

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367 views

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c# - TreeView, HierarchicalDataTemplate and recursive Data

For my treeview I have two different classes that provide the ItemsSource. public class TreeViewModel : ViewModelBase ... in Items there. See Question&Answers more detail:os...

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

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asp.net core - How can I set the Authority on OpenIdConnect middleware options dynamically?

We have multiple tenants, and they use different authorities (their own, not just standard providers). While ... . Appreciate any suggestion! See Question&Answers more detail:os...

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

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645 views

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node.js - Sinon stub function used with destructuring

I wish to stub a function used in the file I'm currently testing. This function is required with a ... insights I will be grateful ! See Question&Answers more detail:os...

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

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443 views

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python - SQL join or R's merge() function in NumPy?

Is there an implementation where I can join two arrays based on their keys? Speaking of which, is the canonical ... ' or 'rownames' attribute)? See Question&Answers more detail:os...

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

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jfilechooser - How to use the default File Chooser for the operating system? java

I was just wondering: how does Gmail use the Windows/Mac file chooser to upload files? Is there any way to do ... re more used to. Tips anyone? See Question&Answers more detail:os...

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

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361 views

1 answer

How does C++ link template instances

If I define a function (maybe a class member function but not inlined) in a header file that is included ... info would be appreciated. Thanks! See Question&Answers more detail:os...

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

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467 views

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php - How to set for specific directory open_basedir

I have a directory /htdocs/unsecured and I want to limit whatever is in that directory or its subdirectories ... for this directory only? See Question&Answers more detail:os...

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

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484 views

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c++ - How to enable visual styles without a manifest

According to the docs: "If you want your application to use ComCtl32.dll version 6, you must add an application ... like to use visual styles. See Question&Answers more detail:os...

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

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888 views

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firebase - Stream builder from firestore to flutter

I am wondering how to get data from firestore to flutter app using the streambuilder. I created the necessary ... light on this. Tks. See Question&Answers more detail:os...

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

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881 views

1 answer

rails 3 activerecord order - what is the proper sql injection work around?

let us say I have a list page of users and you can sort by the different columns, when clicking 'email' it ... way to handle this kind of thing See Question&Answers more detail:os...

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

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