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JavaScript Two key pressed at the same time

How to get at the same time two codes when i have pressed two keys on the keyboard? In it, I only get one ... which; text.innerHTML += key; }; See Question&Answers more detail:os...

asked Jan 31, 2022 in Technique[技术] by 深蓝 (71.8m points)

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spring - Transaction propagation SUPPORTS leads to "HHH000326: Cannot join transaction" warning

We are using JPA (Hibernate 4) with Spring 4 managing the JTA transactions. To allow lazy initialization even ... .spring.io/browse/SPR-13242 See Question&Answers more detail:os...

asked Jan 31, 2022 in Technique[技术] by 深蓝 (71.8m points)

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mathematical optimization - R portfolio analytics chart.EfficientFrontier function

I am trying to use the chart.EfficientFrontier function in the portfolioanalytics package in R to chart ... .EfficientFrontier function failing? See Question&Answers more detail:os...

asked Jan 31, 2022 in Technique[技术] by 深蓝 (71.8m points)

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Scala Future not printing results

I am learning Scala Future with the following code: object DangerousAndSlowService { def queryNextNumber: Long = { 50 ... figure it out. Thanks. See Question&Answers more detail:os...

asked Jan 31, 2022 in Technique[技术] by 深蓝 (71.8m points)

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c++ - undefined reference to `boost::filesystem::path::codecvt() CodeBlocks Windows

I'm trying to use boost on CodeBlocks. I have codeblocks configured with MinGW-w64. I alredy have included the ... filesystem::path::codecvt()'| See Question&Answers more detail:os...

asked Jan 31, 2022 in Technique[技术] by 深蓝 (71.8m points)

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eclipse - Debug multiple android applications simultaneously on one device

Im trying to run two eclipse instances with separate workspaces and separate applications on the same device at the same ... a way to do this? See Question&Answers more detail:os...

asked Jan 31, 2022 in Technique[技术] by 深蓝 (71.8m points)

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MySQL average number of hours between created datetimes for a specific time interval

I have a table with a field called "created" which is a datetime field. Assume NOW() is midnight on 2013- ... ) that is what Gordon suggested. See Question&Answers more detail:os...

asked Jan 31, 2022 in Technique[技术] by 深蓝 (71.8m points)

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python - Declaring a numpy boolean mask in Cython

How should I declare the type of a boolean mask in Cython? Do I actually need to declare it? Here is ... mask] return array_a, array_b, array_c See Question&Answers more detail:os...

asked Jan 31, 2022 in Technique[技术] by 深蓝 (71.8m points)

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r - Series of Correlation coefficient calculation

I want to analyse the default data set in R (mtcars data set). I am interested in creating column of correlation ... need to do it in R. See Question&Answers more detail:os...

asked Jan 31, 2022 in Technique[技术] by 深蓝 (71.8m points)

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database design - Is there anything wrong with having a table with one column? (MSSQL Server)

Consider the following scenario: Tables: Employee (EmpId(PK), Name) TeamMembers(TeamId(PK), EmpId(PK)) Project(ProjId ... (PK), TeamId(FK)) See Question&Answers more detail:os...

asked Jan 31, 2022 in Technique[技术] by 深蓝 (71.8m points)

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indexing - Is it possible to reverse the traversing order of index in MongoDB to keep performance but ingore creating similar index?

Collection c has hundred thousands of documents, and every document has two fields (x and y). Below are some examples. ... : "Mars-PC:27017" } See Question&Answers more detail:os...

asked Jan 31, 2022 in Technique[技术] by 深蓝 (71.8m points)

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ios - Can't click on UIButton after add a subview

I'm using a method to add a shadow to my buttons. The problem is after that, I can't click in them ... shadow addSubview:view]; return shadow; } See Question&Answers more detail:os...

asked Jan 31, 2022 in Technique[技术] by 深蓝 (71.8m points)

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android - MvvmCross - Soft back button does not work when using DrawerLayout

I clone Playground Android example in MvvmCross and set DrawerLayout by default. RegisterAppStart< ... /closetoyou293/HambugerSample See Question&Answers more detail:os...

asked Jan 31, 2022 in Technique[技术] by 深蓝 (71.8m points)

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ASCII to Binary conversion, read line by line c++

I'm trying to adapt an "ASCII to a binary" solution found here, to my task. This solution read the line, which the ... file ! " ; return 0; } See Question&Answers more detail:os...

asked Jan 31, 2022 in Technique[技术] by 深蓝 (71.8m points)

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ios - how to compose mail when button at index clicked in UIActionSheet?

I am a bit confused on how to display mail composer when I click the email option in UIActionSheet. Here's my ... :YES completion:NULL]; } } See Question&Answers more detail:os...

asked Jan 31, 2022 in Technique[技术] by 深蓝 (71.8m points)

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jquery animate - Making a <span> element inline-block and overflow: hidden will displace him?

Please use any browser and have a look at this fiddle that is trying to represent the structure I am currently using on a ... </li> </ul> </div> See Question&Answers more detail:os...

asked Jan 31, 2022 in Technique[技术] by 深蓝 (71.8m points)

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bash - if line begins with backslash in .txt file, do this

I am trying to get an if statement to work in bash that deals with lines beginning with in a text file. Something ... , bash 3.2.57(1)-release See Question&Answers more detail:os...

asked Jan 31, 2022 in Technique[技术] by 深蓝 (71.8m points)

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c# - How to get the text before a selection in visual studio extension

What I want to do I have written an extension that inserts code at the current cursor. Now I want to be the ... to achieve what I want to do? See Question&Answers more detail:os...

asked Jan 31, 2022 in Technique[技术] by 深蓝 (71.8m points)

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html - Extract data from a website using VBA

I am trying to extract the data from the webpage http://www.fdci.org/Member.aspx?mid=-1634884325&cat=1 and many ... I am new to VBA Coding. See Question&Answers more detail:os...

asked Jan 31, 2022 in Technique[技术] by 深蓝 (71.8m points)

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lookup tables - Mapping multiple IDs using R

The idea is as follows. Every patient has a unique patient id, which we call hidenic_id. However this ... with hidenic_id and admit time? See Question&Answers more detail:os...

asked Jan 31, 2022 in Technique[技术] by 深蓝 (71.8m points)

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web applications - Dynamic creation of Multiple NVD3 charts with rails partial

I have a page which I am trying to show multiple NVD3 charts on tabs. I see on the NVD3 site that they ... I should structure this in rails?? See Question&Answers more detail:os...

asked Jan 31, 2022 in Technique[技术] by 深蓝 (71.8m points)

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MySQL: Select top 5 rows based on ID and find Subtotal

Need to select top 5 rows for each id based on desc values of a particular column , value and find the ... need to merge both requirements . See Question&Answers more detail:os...

asked Jan 31, 2022 in Technique[技术] by 深蓝 (71.8m points)

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IOS 8 Objective-C Search bar and Table view Using Google Autocomplete

I'm new to iOS development and I've been stuck with this problem for two weeks now. I'm trying to make a ... will be appreciated. Thank you! :) See Question&Answers more detail:os...

asked Jan 31, 2022 in Technique[技术] by 深蓝 (71.8m points)

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How exactly blockchain node switches to another chain?

AFAIK after block validation node runs all transactions in the block, changing the state (list of UTXOs) Let's ... the longer chain? Thanks! See Question&Answers more detail:os...

asked Jan 31, 2022 in Technique[技术] by 深蓝 (71.8m points)

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VBA (Access 2016) UPDATE Query

I've run into a problem with using a variable in a SQL Update Query in Access 2016. I have a logic field ... doesn't the second example work? See Question&Answers more detail:os...

asked Jan 31, 2022 in Technique[技术] by 深蓝 (71.8m points)

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mysql - storing a range of values

I have a resource that has a availability field that lists what hours of a day its available for use? eg. ... is in the range specified here? See Question&Answers more detail:os...

asked Jan 31, 2022 in Technique[技术] by 深蓝 (71.8m points)

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maven 3 - Create datasource and deploy application

I have a maven project which creates a war file and this should be deployed to a bundled wildfly server via ... > </execution> </executions> See Question&Answers more detail:os...

asked Jan 31, 2022 in Technique[技术] by 深蓝 (71.8m points)

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javascript - Execute SharePoint Function On Page Load in AngularJS Application ($scope issue???)

I am using SharePoint's JavaScript Object Model in an AngularJS app and need one of its functions to execute ... AngularJS, or something else? See Question&Answers more detail:os...

asked Jan 31, 2022 in Technique[技术] by 深蓝 (71.8m points)

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