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c# - Duplicate key exception from Entity Framework?

I'm trying to catch the exception thrown when I insert a already existing user with the given username into ... exception or something else? See Question&Answers more detail:os...

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

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robotframework - Json handling in ROBOT

I have a Json file in which there is a field which I need to edit and save the file for next usage. But the ... be edited"(integer value) , ] } See Question&Answers more detail:os...

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

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time series - Analyzing Daily/Weekly data using ts in R

I have just started playing with the ts class to analyze some time series data I have. I am getting a sense ... data, is it not advisable ? 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 - Tell urllib2 to use custom DNS

I'd like to tell urllib2.urlopen (or a custom opener) to use 127.0.0.1 (or ::1) to resolve ... a custom nameserver though. 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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Quartz.Net Job Storage Query

I'm creating a scheduler using Quartz.NET in the current project. In my case all the jobs that has to ... to use a RAMJobStore or AdoJobStore? See Question&Answers more detail:os...

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

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Get path from open file in Python

If I have an opened file, is there an os call to get the complete path as a string? f = open('/ ... get "/Users/Desktop/febROSTER2012.xls" ? See Question&Answers more detail:os...

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

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java - JavaFX - setVisible hides the element but doesn't rearrange adjacent nodes

In JavaFX, if I have a scene with 2 VBox elements and each VBox has multiple Label in it. If I set the ... am using FXML to load my controls. See Question&Answers more detail:os...

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

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When to use part/part of versus import/export in Dart?

I do not completely understand the difference between part/part of and import/export when using libraries in Dart. ... part and part of will? 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 do `?i` and `?-i` in regex mean?

Could someone explain what (?i) and (?-i) wrapping a word in regex mean? (?i)test(?-i) I tested and it ... ? before i mean? I saw this here. 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 - How to change the UINavigationController back button name?

I have a UIViewController and I'm navigating from my first view controller to second view controller and ... button in the navigationController. 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++ - invalid use of incomplete type

I'm trying to use a typedef from a subclass in my project, I've isolated my problem in the example below. ... : forward declaration of class B' 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 do I add formulas to Google Sheets using Google Apps Script?

How do I add a formula like: =SUM(A1:A17) to a range of fields using the Google Apps Script API for Google Sheets? See Question&Answers more detail:os...

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

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laravel - how to create global function that can be accessed from any controller and blade file

I have two controller file homecontroller and backendcontroller. What is the best way to create global function ... appreciate 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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Subtracting two lists in Python

In Python, How can one subtract two non-unique, unordered lists? Say we have a = [0,1,2,1,0] and b = [0, 1, ... to do this in O(n log n) time. See Question&Answers more detail:os...

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

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scikit learn - What does `sample_weight` do to the way a `DecisionTreeClassifier` works in sklearn?

I've read from the relevant documentation that : Class balancing can be done by sampling an equal number of ... a practical example 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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Rails Engine - Gems dependencies, how to load them into the application?

I'm doing an engine here, it works alright in stand alone. When I transform it into a gem, and load it ... the application Gemfile, all works... 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 - When to use takeUnretainedValue() or takeRetainedValue() to retrieve Unmanaged Objects in Swift?

According to Using Swift with Cocoa and Objective-C you can use takeUnretainedValue() and takeRetainedValue() ... always takeUnretainedValue()? See Question&Answers more detail:os...

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

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Git checkout with dot

What difference between next git commands: git checkout branch git checkout branch . git checkout . #<-- used at ... command, everything is ok? 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

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C# async/await Progress event on Task<> object

I'm completely new to C# 5's new async/await keywords and I'm interested in the best way to ... = scanner_ProgressUpdate; return await task; See Question&Answers more detail:os...

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

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Copying from one text file to another using Python

I would like to copy certain lines of text from one text file to another. In my current script when I search for ... line) f1.close() f.close() 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++ - String literals not allowed as non type template parameters

The following quote is from C++ Templates by Addison Wesley. Could someone please help me understand in plain ... as template arguments either: 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 can I add .so files to an android library project using gradle 0.7+

Project structure: App project --> depends on Library project Library Project has a folder for the compiled jni ... an android library project? See Question&Answers more detail:os...

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

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java - Android HttpClient persistent cookies

UPDATE: This question and its answers should no longer be recommended to anyone reading this. Android no- ... cookies persist across intents? See Question&Answers more detail:os...

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

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AngularJs Remove duplicate elements in ng-repeat

I have one dictionary which is stored in field_detail <li ng-repeat = "field in field_detail">{{field.displayName} ... what filter should I use? 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 - How to set a MySQL row to READ-ONLY?

I have a row in a table that I do not want to be changed (ever). Is it possible to set a MySQL row to ... be changed? If so, how? 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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536 views

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android - Activity killed / onCreate called after taking picture via intent

I am trying to take a picture using an intent. My problem is that sometimes after taking a picture my ... lost. Help is greatly 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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439 views

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python - Storing numpy sparse matrix in HDF5 (PyTables)

I am having trouble storing a numpy csr_matrix with PyTables. I'm getting this error: TypeError: objects of type ... .close() Any ideas? 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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Android UI Design: Supporting Multiple Screens

I have read this tutorial SUPPORTING MULTIPLE SCREENS several times and many stackoverflow questions regarding Design ... confusing. 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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