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Is it possible to store str output in a R object?

I want to extract some information from str output of a dataframe. Tried this ... > tmp <- str(iris) > tmp ... questions/22930292/is-it-possible-to-store-str-output-in-a-r-object...

asked Oct 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

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234 views

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r - ggplot2 - bar plot with both stack and dodge

I am trying to create a barplot using ggplot2 where I am stacking by one variable and dodging by another. Here ... com/questions/12715635/ggplot2-bar-plot-with-both-stack-and-dodge...

asked Oct 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

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213 views

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android - How do I default to numeric keyboard on EditText without forcing numeric input?

(This question already has answers here): question from:https://stackoverflow.com/questions/6153796/how-do-i-default-to-numeric-keyboard-on-edittext-without-forcing-numeric-input...

asked Oct 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

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225 views

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node.js - Advantage/disadvantage of using socketio heartbeats

Socket.io allows you to use heartbeats to "check the health of Socket.IO connections." What exactly ... .com/questions/7061362/advantage-disadvantage-of-using-socketio-heartbeats...

asked Oct 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

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226 views

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shell - Combining mingw and git

I have installation of MinGW in D:mingw. I have Git installation in C:Program Filesgit. I want to develop ... :https://stackoverflow.com/questions/5648330/combining-mingw-and-git...

asked Oct 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

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83 views

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Testing route configuration in ASP.NET WebApi

I am trying to do some unit testing of my WebApi route configuration. I want to test that the route ... .com/questions/11851558/testing-route-configuration-in-asp-net-webapi...

asked Oct 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

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685 views

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boolean - What evaluates to True/False in R?

For example, in Ruby, only nil and false are false. What is what in R? e.g.: 5==TRUE and 5==FALSE ... :https://stackoverflow.com/questions/5681166/what-evaluates-to-true-false-in-r...

asked Oct 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

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Java - declaring from Interface type instead of Class

In my quest to correctly grasp Interface best practices, I have noticed declarations such as: List<String> ... /3383726/java-declaring-from-interface-type-instead-of-class...

asked Oct 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

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493 views

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ggplot2 - different size facets proportional of x axis on ggplot 2 r

The following is a situation: group1 <- seq(1, 10, 2) group2 <- seq(1, 20, 3) x = c(group1, ... /questions/10454805/different-size-facets-proportional-of-x-axis-on-ggplot-2-r...

asked Oct 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

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android - ALLOW button not working after update

On the devices which have installed the latest update of Android Marshmallow - that is June2016 update, when ... .com/questions/37829165/allow-button-not-working-after-update...

asked Oct 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

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97 views

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java - Reducing android app (apk) size

I would be now publishing my first app on Google play store. I have already compressed images used in my ... ://stackoverflow.com/questions/25101534/reducing-android-app-apk-size...

asked Oct 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

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90 views

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How do I compile a C++ file to WebAssembly?

Suppose I have a simple, self-contained C++ file (math.cpp) like this: int add(int x, int y) { return ... .com/questions/45146099/how-do-i-compile-a-c-file-to-webassembly...

asked Oct 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

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282 views

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iphone - Implementing Push notifications for iOS (Server Side)

We want to be able to push simple text messages to ALL our iphone users. For that we obviously need ... .com/questions/7301215/implementing-push-notifications-for-ios-server-side...

asked Oct 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

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PostgreSQL equivalent of MySQL memory tables?

Does PostgreSQL have an equivalent of MySQL memory tables? These MySQL memory tables can persist across ... com/questions/11729690/postgresql-equivalent-of-mysql-memory-tables...

asked Oct 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

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338 views

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windows - What the C# equivalent of "mklink /J"?

I know how to create a symbolic link in windows in a .bat script: mklink /J <LinkPath> <OriginalResourcePath> ... .com/questions/11156754/what-the-c-sharp-equivalent-of-mklink-j...

asked Oct 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

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javascript - Promise. What is the difference between return resolve() and resolve()?

somewhere read this example: return new Promise( (resolve, reject) => { fs.readFile(file, (err, data) ... 42349338/promise-what-is-the-difference-between-return-resolve-and-resolve...

asked Oct 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

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114 views

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java - How to run Spark code in Airflow?

Hello people of the Earth! I'm using Airflow to schedule and run Spark tasks. All I found by this time is ... /stackoverflow.com/questions/39827804/how-to-run-spark-code-in-airflow...

asked Oct 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

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344 views

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rest - "404 Resource Not Found" From Azure Blob Storage Document from PUT

I'm attempting to do a PUT request to create a new BLOB. After some initial trouble with Authorization header, ... 404-resource-not-found-from-azure-blob-storage-document-from-put...

asked Oct 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

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424 views

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Cloud Build fails to deploy to Google App Engine - You do not have permission to act as @appspot.gserviceaccount.com

This morning I made a PR which triggered a Cloud Build for my staging enviroment but failed to deploy the results to ... -deploy-to-google-app-engine-you-do-not-have-permission-to...

asked Oct 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

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160 views

1 answer

ios - What is AWDL (Apple Wireless Direct Link) and how does it work?

I'm trying to find out what AWDL is. On iOS, if you use Apple's peer-to-peer networking over BlueTooth, it ... /what-is-awdl-apple-wireless-direct-link-and-how-does-it-work...

asked Oct 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

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498 views

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powershell - Install-Module : The term 'Install-Module' is not recognized as the name of a cmdlet

I was trying to install Azure using Install-Module Azure in PowerShell. I got the following error: PS C:Windowssystem32> ... -install-module-is-not-recognized-as-the-name-of-a-cm...

asked Oct 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

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394 views

1 answer

debugging - Is there asm nop equivalent in java?

When I program C/C++ with Visual Studio I often use __asm nop; command to insert a noop code in order ... /stackoverflow.com/questions/10736275/is-there-asm-nop-equivalent-in-java...

asked Oct 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

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603 views

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gdb - How do I view the value of an <optimized out> variable in C++?

I am using gdb to debug a C++ program. I have this code: int x = floor(sqrt(3)); and I want to view the ... /9123676/how-do-i-view-the-value-of-an-optimized-out-variable-in-c...

asked Oct 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

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140 views

1 answer

google play - Designing Android apps for tablets

In the Play developer console it says: Your APK does not seem to be designed for tablets But I have ... ://stackoverflow.com/questions/17938163/designing-android-apps-for-tablets...

asked Oct 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

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245 views

1 answer

python - How do I call a Django function on button click?

I am trying to write a Django application and I am stuck at how I can call a view function when a button is ... /questions/15341285/how-do-i-call-a-django-function-on-button-click...

asked Oct 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

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135 views

1 answer

c++ - initializer_list and template type deduction

Consider the function: template<typename T> void printme(T&& t) { for (auto i : t) std::cout ... //stackoverflow.com/questions/12431495/initializer-list-and-template-type-deduction...

asked Oct 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

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748 views

1 answer

mapreduce - How does Hadoop perform input splits?

This is a conceptual question involving Hadoop/HDFS. Lets say you have a file containing 1 billion lines. ... .com/questions/2831507/how-does-hadoop-perform-input-splits...

asked Oct 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

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249 views

1 answer

sockets - How to identify end of InputStream in java

I am trying to read bytes from server using Socket program, ie I am using InputStream to read the bytes. If I ... .com/questions/5562370/how-to-identify-end-of-inputstream-in-java...

asked Oct 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

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