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javascript - Sort an array of objects in React and render them

I have an array of objects containing some information. I am not able to render them in the order I want and I ... sort them before i use map? 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# - How do I set a conditional compile variable?

In C/C++ you can define macros in code like this: #define OLD_WAY 1 Although I've never done it, I assume that ... how and where do I define 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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MongoDB: Updating subdocument

I have this collection: [{ "_id" : 7, "category" : "Festival", "comments" : [ { "_id" : ... can I insert inside the comments subdocument? 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++ - Is RVO (Return Value Optimization) applicable for all objects?

Is RVO (Return Value Optimization) guaranteed or applicable for all objects and situations in C++ compilers ( ... a specific returned 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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spring - Is this very likely to create a memory leak in Tomcat?

I configured tomcat to work with a different external open source. However, after the tomcat ... AbstractAutowireCapableBeanFactory.java:1325) 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 - Using mysql concat() in WHERE clause?

I would like to search my table having a column of first names and a column of last names. I currently ... work better than in the middle? See Question&Answers more detail:os...

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

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MongoDB Text Search AND multiple search words

I have an index on an array "keys" that I am using to provide full text functionality to my applicaiton. ... with either printer or ink. See Question&Answers more detail:os...

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

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encoding - write utf-8 characters to file with fputcsv in php

I want to try write Persian character in CSV file in PHP, I am using fputcsv function but how can write UTF- ... ->code, $discount->label)); 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 - Request headers bag is missing Authorization header in Symfony 2?

I'm trying to implement a custom authentication provider in Symfony 2. I'm sending a test request using Fiddler and printing ... 5,en;q=0.3 ) ) See Question&Answers more detail:os...

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

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tsql - INSERT INTO @TABLE EXEC @query with SQL Server 2000

Is it true that SQL Server 2000, you can not insert into a table variable using exec? I tried this script and ... that true, what should I 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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python - Tokenize a paragraph into sentence and then into words in NLTK

I am trying to input an entire paragraph into my word processor to be split into sentences first and then into ... not own the above content. 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 out an R command via something like try()

I'm running a large number of iterations in parallel. Certain iterates take much (say 100x) longer than others. ... advice? Thanks in advance. See Question&Answers more detail:os...

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

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layout - GroupBox / TitledBorder in JavaFX 2?

Is there something like a GroupBox or TitledBorder available on JavaFX 2? Thanks for any hint :-) 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 - Annotate Time Series plot in Matplotlib

I have an index array (x) of dates (datetime objects) and an array of actual values (y: bond prices). ... examples on my problem. 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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c++ - Do rvalue references allow dangling references?

Consider the below. #include <string> using std::string; string middle_name () { return "Jaan"; } int main () ... dangling reference, isn't 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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Android - communicating between two devices

What is the best way for an Android app installed on two devices to communicate with each other? Can ... directly without using text messaging? 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 implement auto-complete for address using Apple Map Kit

I want to auto-complete the address for the user as same as what google api provides in this link: https:// ... head for google api ? 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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c# - How to have a loop in a Windows service without using the Timer

I want to call a Business layer method from a Windows service (done using C# and .NET) after every 10 ... approach this problem ? Regards, Chak 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 - Embedding HWND into external process using SetParent

I'm trying to embed a window from my process into the window of an external process using the SetParent ... window of the main application. 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 - Does spring @Scheduled annotated methods runs on different threads?

I have several methods annotated with @Scheduled(fixedDelay=10000). In the application context, I have this ... even remove the delay? 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 - In JUnit 5, how to run code before all tests

The @BeforeAll annotation marks a method to run before all tests in a class. http://junit.org/junit5/docs/ ... occur before running any tests. 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 does next raise a 'StopIteration', but 'for' do a normal return?

In this piece of code, why does using for result in no StopIteration or is the for loop trapping all exceptions and ... don't I see a traceback? See Question&Answers more detail:os...

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

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dictionary - Is there a 'multimap' implementation in Python?

I am new to Python, and I am familiar with implementations of Multimaps in other languages. Does Python have such a data ... ]) # prints: ['c'] See Question&Answers more detail:os...

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

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go - Map with concurrent access

When you use a map in a program with concurrent access, is there any need to use a mutex in functions to read values? 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 - JPA: update only specific fields

Is there a way for updating only some fields of an entity object using the method save from Spring Data JPA? ... values when save the object"? See Question&Answers more detail:os...

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

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memory leaks - Unload a module in Python

TL/DR: import gc, sys print len(gc.get_objects()) # 4073 objects in memory # Attempt to unload the module ... : http://gist.github.com/450606 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 - Searching in a ArrayList with custom objects for certain strings

I have a ArrayList with custom objects. I want to search inside this ArrayList for Strings. The class for the ... for all "name" strings. See Question&Answers more detail:os...

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

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852 views

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linux - make -j 8 g++: internal compiler error: Killed (program cc1plus)

When I deploy Apache Mesos on Ubuntu12.04, I follow the official document, in step "make -j 8" I'm getting this ... ] Error 1 what should I 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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