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Question has been edited from the original. After reading this interesting discussion I was wondering how to replace ... .com/questions/21714867/replace-na-in-a-dplyr-chain...

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

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139 views

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c# - POST a form array without successful

I'm developing an ASP.NET MVC 5 web with C# and .NET Framework 4.5.1. I have this form in a ... :https://stackoverflow.com/questions/29161481/post-a-form-array-without-successful...

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

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130 views

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c++ - Are free operator->* overloads evil?

I was perusing section 13.5 after refuting the notion that built-in operators do not participate in ... /stackoverflow.com/questions/2696864/are-free-operator-overloads-evil...

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

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202 views

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bounce - Set email headers so bounced emails go to a specific address

From our rails app we send out some system-generated emails with the 'from' address set to [email protected]. ... set-email-headers-so-bounced-emails-go-to-a-specific-address...

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

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108 views

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java - Calling awt Frame methods from subclass

This question is about Frames, Java and Processing. This questions sounds pretty convoluted but its really not. ... .com/questions/5665156/calling-awt-frame-methods-from-subclass...

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

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156 views

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types - In C#, why is "int" an alias for System.Int32?

Since C# supports Int8, Int16, Int32 and Int64, why did the designers of the language choose to define int as an ... questions/8626056/in-c-why-is-int-an-alias-for-system-int32...

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

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c# - Is there a way to get the size of a file in .NET using a static method?

I know the normal way of getting the size of a file would be to use a FileInfo instance: using System.IO; class SizeGetter ... -get-the-size-of-a-file-in-net-using-a-static-method...

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

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323 views

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sockets - How to inspect websocket traffic with charlesproxy for iOS simulator/devices

I would like to inspect network traffic going through web sockets, I have no control over the networking ... -inspect-websocket-traffic-with-charlesproxy-for-ios-simulator-devices...

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

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When should I (and should I not) use Scala's @inline annotation?

I believe I understand the basics of inline functions: instead of a function call resulting in parameters being placed ... -should-i-and-should-i-not-use-scalas-inline-annotation...

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

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176 views

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python - How do you develop against OpenID locally

I'm developing a website (in Django) that uses OpenID to authenticate users. As I'm currently only running ... .com/questions/172040/how-do-you-develop-against-openid-locally...

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

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362 views

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How can I discover zeroconf (Bonjour) services on Android? I'm having trouble with jmDNS

I'm working with a Droid / Android 2.0.1 and encountering an issue apparently many people have: I'm unable ... -i-discover-zeroconf-bonjour-services-on-android-im-having-trouble-wi...

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

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135 views

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ios - Memory-mapped files and low-memory scenarios

How does the iOS platform handle memory-mapped files during low-memory scenarios? By low-memory scenarios, I ... com/questions/6172919/memory-mapped-files-and-low-memory-scenarios...

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

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javascript - How to cleanly deal with global variables?

I have a number of aspx pages (50+). I need to declare a number(5-7) of global variables in each ... //stackoverflow.com/questions/5063878/how-to-cleanly-deal-with-global-variables...

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

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285 views

1 answer

How to upgrade a running Elasticsearch older instance to a newer version?

Essentially I cannot find documents or resources that explains the procedure of upgrading a running Elasticsearch ... -running-elasticsearch-older-instance-to-a-newer-version...

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

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144 views

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c++ - Is it a conforming compiler extension to treat non-constexpr standard library functions as constexpr?

gcc compiles the following code without warning: #include <cmath> struct foo { static constexpr double a = ... -compiler-extension-to-treat-non-constexpr-standard-library-fu...

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

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178 views

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javascript - Orderby not working with dict syntax on ng-repeat

I am trying to use ng-repeat with a dictionary style syntax and apply an order to the key value. (key, ... com/questions/14330878/orderby-not-working-with-dict-syntax-on-ng-repeat...

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

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657 views

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c - Invalid application of sizeof to incomplete type with a struct

I have a struct where I put all the information about the players. That's my struct: struct player{ int ... /8915230/invalid-application-of-sizeof-to-incomplete-type-with-a-struct...

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

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458 views

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python - How to read a CSV file from a stream and process each line as it is written?

I would like to read a CSV file from the standard input and process each row as it comes. My CSV outputting code ... -file-from-a-stream-and-process-each-line-as-it-is-written...

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

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105 views

1 answer

How to CSS: select element based on inner HTML

(This question already has answers here): question from:https://stackoverflow.com/questions/4811962/how-to-css-select-element-based-on-inner-html...

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

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142 views

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c# - Removing event handlers

Is this: Button.Click -= new EventHandler(Button_Click); the same as this: Button.Click -= Button_Click ... from:https://stackoverflow.com/questions/1307607/removing-event-handlers...

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

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257 views

1 answer

asp.net mvc - How do I delete an object from an Entity Framework model without first loading it?

I am quite sure I've seen the answer to this question somewhere, but as I couldn't find it with a couple ... delete-an-object-from-an-entity-framework-model-without-first-loading-i...

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

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260 views

1 answer

Should you define a null/unknown value for Java enums?

When you define an enum for something that can be "undefined" in your interfaces, should you define a separate ... 7144541/should-you-define-a-null-unknown-value-for-java-enums...

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

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84 views

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java - Unit tests vs integration tests with Spring

I'm working on a Spring MVC project, and I have unit tests for all of the various components in ... stackoverflow.com/questions/281758/unit-tests-vs-integration-tests-with-spring...

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

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211 views

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reactjs - When do I choose React state Vs Redux Store

I've been learning Redux and a part I'm unclear of is, how do I make a determination between using react ... com/questions/41584647/when-do-i-choose-react-state-vs-redux-store...

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

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242 views

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python - Getting value from select tag using flask

I'm new to Flask and I'm having trouble getting the value from my select tag. I have tried ... stackoverflow.com/questions/32019733/getting-value-from-select-tag-using-flask...

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

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186 views

1 answer

c# - Comparing Double.NaN with itself

I am stuck trying to find out why these two operations return different values: Double.NaN == Double.NaN ... //stackoverflow.com/questions/14458890/comparing-double-nan-with-itself...

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

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333 views

1 answer

is there a Unicode character for Copy and Paste?

Are there Unicode characters that represent Copy and Paste? Perhaps in Unicode 6? (there are scissor symbols that can ... /8714969/is-there-a-unicode-character-for-copy-and-paste...

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

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169 views

1 answer

Python URLLib / URLLib2 POST

I'm trying to create a super-simplistic Virtual In / Out Board using wx/Python. I've got the ... from:https://stackoverflow.com/questions/3238925/python-urllib-urllib2-post...

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

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