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I am trying to perform a Segue between two UI Views I have correctly typed the identifier for the segue as can ... } } } Any help appreciated. See Question&Answers more detail:os...

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.net - Determine if a generic param is a Nullable type

I have the following VB.NET function, for example: Public Function MyFunction (Of TData) (ByVal InParam As Integer ... TData is a NULLable Type? See Question&Answers more detail:os...

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Paging on Google Places API returns status INVALID_REQUEST

I'm using the Google Place API for place search: https://developers.google.com/places/documentation/search After the ... to wait using an app. See Question&Answers more detail:os...

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Batch file to delete files older than N hours or minutes

I see this - Batch file to delete files older than N days But how can I delete files older than N hours or minutes? 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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Is the hasOwnProperty method in JavaScript case sensitive?

Is hasOwnProperty() method case-sensitive? Is there any other alternative case-insensitive version of hasOwnProperty? See Question&Answers more detail:os...

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Add Number of days column to Date Column in same dataframe for Spark Scala App

I have a dataframe df of columns ("id", "current_date", "days") and I am trying to add the the "days" to " ... 1.6.0 scala version: 2.10.6 See Question&Answers more detail:os...

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maven - java.lang.NoSuchMethodError: com.google.common.base.Preconditions.checkArgument

I am trying to run this grpc-Java example on my local. Corresponding proto file for the same is here. When ... > </dependency> </dependencies> See Question&Answers more detail:os...

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javabeans - how to generically compare entire java beans?

I've been trying to grok the org.apache.commons.beanutils library for a method/idiom to evaluate for equality all ... the wrong way? Thanks. See Question&Answers more detail:os...

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c++ - Calculate a*a mod n without overflow

I need to calculate a*a mod n but a is fairly large, resulting in overflow when I square it. Doing ((a ... there's no pattern to these numbers. See Question&Answers more detail:os...

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java - HQL joined query to eager fetch a large number of relationships

My project has recently discovered that Hibernate can take multiple levels of relationship and eager fetch them in a ... as a new question? See Question&Answers more detail:os...

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c++ - Link errors using <filesystem> members in C++17

I'm using gcc 7.2 on Ubuntu 16.04, and I need to use the new filesystem library from C++17. Even though there ... > in C++17? Thanks in advance. See Question&Answers more detail:os...

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excel - simple vba code gives me run time error 91 object variable or with block not set

So I have a simple little macro/sub defined when a command button is clicked. The problem is it gives me: Run ... Cell "A12" in Sheet8. Thanks! See Question&Answers more detail:os...

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Strange Java Timezone Date Conversion Problem

I want to convert ms-since-1970-timestamp to a date with timezone (Germany). Here are two variants of code ... tell me what went wrong here? See Question&Answers more detail:os...

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Is there a simple function for rounding a DateTime down to the nearest 30 minutes, in C#?

For example: 2011-08-11 16:59 becomes 2011-08-11 16:30 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 - Why are there dummy modules in sys.modules?

Importing the standard "logging" module pollutes sys.modules with a bunch of dummy entries: Python 2.5.4 (r254: ... and future of the feature. See Question&Answers more detail:os...

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Adding two values in Sass function creates double instance of 'px'

I have a custom function in Sass that takes an em value, strips the unit and creates a px value: @function ... to be added: right: 36px; See Question&Answers more detail:os...

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java - Difficulties understanding the renderers mechanism of swing's JTable and JTree

Often when using JTable or JTree, user define its own cell renderer. It is very common to inherit user's component from ... it. Can any of you? See Question&Answers more detail:os...

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MongoDB: find and findOne with nested array filtering

This little task turned out to be harder than I thought. Consider the following very simple Posts collection. Suppose I want ... : false } } ] } See Question&Answers more detail:os...

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

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Spring MultipartFile validation and conversion

I currently have a Spring MVC controller that takes a MultipartFile @RequestMapping(method = RequestMethod.POST) public ... to work together. See Question&Answers more detail:os...

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python - Caesar Cipher issue

I am trying to implement a Caesar cipher. I have tried to return message in the function, but I get an error ... chr ( number)) print (message) See Question&Answers more detail:os...

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c++ - Application has failed to start because MSVCP100D.dll was not found, reinstalling app may work

I googled on this and realized there are probably several causes to this so I will describe my scenario. This ... side with Visual Studio 2008. See Question&Answers more detail:os...

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python - "In" operator for numpy arrays?

How can I do the "in" operation on a numpy array? (Return True if an element is present in the given numpy ... a True #Not quite what I expected See Question&Answers more detail:os...

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google sheets - Use script in all spreadsheets

I'm in the process of completely switching from excel to google spreadsheets. I'm writing a set of ... automatically be available. 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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java - What does the -XstartOnFirstThread VM Argument do / mean?

I can't find documentation for the VM argument -XstartOnFirstThread. Seems necessary for me to run JOGL through LWJGL ... ://www.lwjgl.org/guide See Question&Answers more detail:os...

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c++ - How can CString be passed to format string %s?

class MyString { public: MyString(const std::wstring& s2) { s = s2; } operator LPCWSTR() const { return s ... , howmany, (LPCTSTR)kindOfFruit ); See Question&Answers more detail:os...

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c++ - Possible memory leak without a virtual destructor?

#include <iostream> using namespace std; class base { int a; public: base() {a =0;} }; class derv :public ... only base part of derv object?? See Question&Answers more detail:os...

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Is there any Javascript TCP Soket Library for PHP like SignalR with .NET?

I found SignalR library for ASP.NET developers that simplifies the process of adding real-time web functionality to ... same job like signalR?? See Question&Answers more detail:os...

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javascript - Convert array of objects to array of arrays

var json = [{one: "text1", two: "text2", three: 3, four: 4}, {one: "text3", two: "text4", three: 5, ... it easily? If not a for loop might do. See Question&Answers more detail:os...

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

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