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react native - fetch response.json() gives responseData = undefined

When using fetch: fetch(REQUEST_URL, { method: 'get', dataType: 'json', headers: { 'Accept': 'application/ ... : JSON.parse(response._bodyText) See Question&Answers more detail:os...

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

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Cannot use RVM-installed Ruby with sudo

I have succefully configured RVM to use Ruby 1.9.2 and everything is fine. However when I'm trying to run ... be using the system wide install? See Question&Answers more detail:os...

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

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javascript - ArrayBuffer to blob conversion

I have a project where I need to display djvu schemas in browser. I found this old library on Github which, as ... is: what I am doing wrong? See Question&Answers more detail:os...

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

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scala - Can't prove that singleton types are singleton types while generating type class instance

Suppose I've got a type class that proves that all the types in a Shapeless coproduct are singleton ... enumerate the constructors manually? 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 to find the shortest string in a list in Python

This seems like a pretty simple problem, but I'm looking for a short and sweet way of doing it that is still ... problem (at least in python). 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 - Gunicorn can't find app when name changed from "application"

I use gunicorn --workers 3 wsgi to run my Flask app. If I change the variable application to myapp, Gunicorn gives ... = "__main__": myapp.run() See Question&Answers more detail:os...

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

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Where is super pom for maven 3?

For maven 2 it used to be in M2_HOME/lib/maven-2.2.1-uber.jar:org/apache/maven/project/pom-4.0.0.xml But 3.0.x does not have a single jar. See Question&Answers more detail:os...

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

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r - Text wrap for plot titles

I have a long title for a plot in R and it keeps extending outside the plot window. How can I wrap the title over 2 rows? 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 - how to perform max/mean pooling on a 2d array using numpy

Given a 2D(M x N) matrix, and a 2D Kernel(K x L), how do i return a matrix that is the result of max or mean ... ([[ 200, 119], [ 120, 49]]) See Question&Answers more detail:os...

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

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Django ManyToMany model validation

I have a model with a ManyToManyField similar to this one (the model Word has a language, too): class ... I would 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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Java generic method inheritance and override rules

I have an abstract class that has a generic method and I want to override the generic method by substituting ... and it should be SpecificClass. See Question&Answers more detail:os...

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

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dart - How to enable Null-Safety in Flutter?

I tried to use null safety, but it's giving me this error: This requires the 'non-nullable' language feature to be ... stable, 1.22.3, ... See Question&Answers more detail:os...

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

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oracle - How can I execute a native SQL script in JPA/Hibernate?

I have a SQL script with database dump. How can I execute it using Hibernate's EntityManager? I tried it this way ... 2.0.2.0 - 64bit Production See Question&Answers more detail:os...

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

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windows - Changing a batch file when its running

I am running a long running batch file. I now realize that I have to add some more commands at the end of ... the file and then runs the job? 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 - How do I determine all of my IP addresses when I have multiple NICs?

I have multiple Network Interface Cards on my computer, each with its own IP address. When I use gethostbyname( ... do I get the others? See Question&Answers more detail:os...

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

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What is $$phase in AngularJS?

I found this code snippet which is part of a angular directive someone wrote for bootstrap modal. // ... Angular Directive for Bootstrap Modal See Question&Answers more detail:os...

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

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html - How can I serialize a function in JavaScript?

For example, say I have a function defined as follows: function foo() { return "Hello, serialized world!"; } I ... can I go about doing that? 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# - lowering priority of Task.Factory.StartNew thread

a code like below will start a new thread to do the job. Is there any way I can control the priority of ... of this thread to BelowNormal }); See Question&Answers more detail:os...

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

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308 views

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javascript - What event does JQuery $function() fire on?

We have a JQuery $(function() statement as: <script type="text/javascript"> $(function(){ //Code.. }) </ ... /javascript"> //Code.. </script> See Question&Answers more detail:os...

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

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.net - DispatcherTimer vs a regular Timer in WPF app for a task scheduler

Please, explain the difference between "DispatcherTimer" and "a regular Timer" that @Kent Boogaart meant for using in a ... this is not true?) See Question&Answers more detail:os...

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

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optimization - What is fusion in Haskell?

Every now and again I have been noticing the following in Haskell documentation: (for example in Data.Text): Subject to ... and how do I use 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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692 views

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how to create a folder in android External Storage Directory?

I cannot create a folder in android External Storage Directory. I have added permissing on manifest, <uses-permission android: ... +Path ); } } See Question&Answers more detail:os...

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

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995 views

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c# - How to get line number(s) in the StackTrace of an exception thrown in .NET to show up

MSDN says this about the StackTrace property of the Exception class: The StackTrace property holds a stack trace, ... and no line numbers. 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 - Share Extension to open containing app

I want to create an Android Style share feature for my app. I created a share extension which gets called when ... files inside my main app? 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 - Gradle sync failed: failed to find Build Tools revision 24.0.0 rc1

As of today I've been running into an error setting up new projects in Android Studio. Right after creating a ... can be resolved? 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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jquery - Clear text area

In Onselect event I have script: $("#vinanghinguyen_images_bbocde").val(''); $("#vinanghinguyen_images_bbocde").val( ... }); </script> See Question&Answers more detail:os...

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

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371 views

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python - Pyaudio installation error - 'command 'gcc' failed with exit status 1'

I'm running Ubuntu 11.04, Python 2.7.1 and wanted to install Pyaudio. So I ran, $ sudo easy_install ... pa_get_device_count': src/_portaudiomodule.c:1364:3: error: PaDeviceIndex'...

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

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430 views

1 answer

android - How do I restrict my EditText input to numerical (possibly decimal and signed) input?

I have read Android: Limiting EditText to numbers and How do I show the number keyboard on an EditText in android?. ... So, how do I do 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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