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221 views

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python - Removing nan values from an array

I want to figure out how to remove nan values from my array. My array looks something like this: x = [1400, ... How can I remove the nan values from x? Question&Answers:os...

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

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455 views

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linux - More elegant "ps aux | grep -v grep"

When I check list of processes and 'grep' out those that are interesting for me, the grep itself is also included ... a separate script, which is also not bad) Question&Answers:os...

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

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85 views

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c# - <out T> vs <T> in Generics

What is the difference between <out T> and <T>? For example: public interface IExample<out T> { ... } vs. public interface IExample<T> { ... } Question&Answers:os...

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

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252 views

1 answer

Is it possible to make the -init method private in Objective-C?

I need to hide (make private) the -init method of my class in Objective-C. How can I do that? Question&Answers:os...

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

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1.2k views

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python - Automatic contrast and brightness adjustment of a color photo of a sheet of paper with OpenCV

When photographing a sheet of paper (e.g. with phone camera), I get the following result (left ... /histogram equalization/other technique could be used? Question&Answers:os...

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

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426 views

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Import CSV to SQLite

I'm trying to import a csv file to an SQLite table. Example csv: 1,2 5,6 2,7 Example command: sqlite> ... four columns with six pieces of data and two columns. Question&Answers:os...

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

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533 views

1 answer

Which types can be used for Java annotation members?

Today I wanted to create my first annotation interface following this documentation and I got this compiler error ... which types are actually allowed and why. Question&Answers:os...

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

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140 views

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Exif manipulation library for python

Closed. This question is opinion-based. It is not currently accepting answers. Question&Answers:os...

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

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246 views

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arrays - length and length() in Java

Why do we have the length of an array as an attribute, array.length, and for String we have a method, str.length()? Is there some reason? Question&Answers:os...

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

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222 views

1 answer

javascript - split string only on first instance of specified character

In my code I split a string based on _ and grab the second item in the array. var element = $(this).attr(' ... doesn't work. I tried it over at jsFiddle... Question&Answers:os...

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

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86 views

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How to use jQuery with TypeScript

I am trying $(function(){ alert('Hello'); }); Its showing this error in Visual Studio: (TS) Cannot find name '$'.. How can I use jQuery with TypeScript ? Question&Answers:os...

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

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186 views

1 answer

Can HTML be embedded inside PHP "if" statement?

I would like to embed HTML inside a PHP if statement, if it's even possible, because I'm thinking the HTML ... like to update or delete contents in the table. Question&Answers:os...

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

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121 views

1 answer

javascript - How to create streams from string in Node.Js?

I am using a library, ya-csv, that expects either a file or a stream as input, but I have a string. How do I convert that string into a stream in Node? Question&Answers:os...

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

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354 views

1 answer

python - Convert to binary and keep leading zeros

I'm trying to convert an integer to binary using the bin() function in Python. However, it always removes the ... > 0b00000001 Is there a way of doing this? Question&Answers:os...

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

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395 views

1 answer

c# - Multiple actions were found that match the request in Web Api

I keep getting this error when I try to have 2 "Get" methods Multiple actions were found that match ... HttpResponseMessage FullDetails() { return null; } Question&Answers:os...

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

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185 views

1 answer

python - How to get a complete list of object's methods and attributes?

This question already has answers here: Question&Answers:os...

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

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160 views

1 answer

Switching a DIV background image with jQuery

I am making an expand/collapse call rates table for the company I work for. I currently have a table with a ... it is clicked, except sort of like a toggle. Question&Answers:os...

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

0 votes

398 views

1 answer

android - windowSoftInputMode="adjustResize" not working with translucent action/navbar

I have problems with the translucent actionbar/navbar in the new Android KitKat (4.4) and the ... /RelativeLayout> Any ideas for fixing this? Question&Answers:os...

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

0 votes

297 views

1 answer

ios6 - shouldAutorotateToInterfaceOrientation not being called in iOS 6

I'm using MGSplitViewController and I'm usingshouldAutorotateToInterfaceOrientation to control the size of the master view ... m not aware of has changed? Question&Answers:os...

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

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212 views

1 answer

python - Difference between except: and except Exception as e:

Both the following snippets of code do the same thing. They catch every exception and execute the code in ... is exactly the difference in both the constructs? Question&Answers:os...

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

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272 views

1 answer

python - How to turn off INFO logging in Spark?

I installed Spark using the AWS EC2 guide and I can launch the program fine using the bin/pyspark ... or workers export SPARK_SUBMIT_CLASSPATH="$FWDIR/conf" Question&Answers:os...

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

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291 views

1 answer

java - Find first element by predicate

I've just started playing with Java 8 lambdas and I'm trying to implement some of the things that I'm used to ... which could be wrong). Is there a better way? Question&Answers:os...

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

0 votes

308 views

1 answer

c - What's the difference between a file descriptor and file pointer?

I want to know the difference between a file descriptor and file pointer. Also, in what scenario would you use one instead of the other? Question&Answers:os...

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

0 votes

398 views

1 answer

java - Maven compile with multiple src directories

Is there a way to compile multiple java source directories in a single maven project? Question&Answers:os...

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

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301 views

1 answer

Determine if Python is running inside virtualenv

Is it possible to determine if the current script is running inside a virtualenv environment? Question&Answers:os...

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

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88 views

1 answer

c# - Are static class instances unique to a request or a server in ASP.NET?

On an ASP.NET website, are static classes unique to each web request, or are they instantiated whenever ... "TheInstance"] as GloballyAccessibleClass; } } } Question&Answers:os...

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

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200 views

1 answer

android - Animate a custom Dialog

I'm trying to have a custom dialog appear as though it's sliding down from a text view. Is this possible? ... ="3000" android:zAdjustment="top"> </translate> Question&Answers:os...

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

0 votes

95 views

1 answer

javascript - How to add many functions in ONE ng-click?

I've be looking for how to execute this but I can't find anything related so far, :( I could nest both functions ... you add multiple classes...but it's not :( Question&Answers:os...

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

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