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regex - Insert a newline character every 64 characters using Python

Using Python I need to insert a newline character into a string every 64 characters. In Perl it's easy: s/(.{ ... a more pythonic way to do 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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flutter - Subclass a class that extends StatelessWidget or StatefulWidget class

Is it possible to create a class that extends a class extending StatelessWidget or StatefulWidget. For example: class ... I had not success. See Question&Answers more detail:os...

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

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178 views

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Rscript does not load methods package, R does -- why, and what are the consequences?

Just saw this: $ Rscript -e "sessionInfo()['basePkgs']" $basePkgs [1] "stats" "graphics" "grDevices" " ... or absence of the methods package. 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++ - Override a member function with different return type

Consider the example below: #include <iostream> using namespace std; class base { public: virtual int func() ... . Is my understanding correct? See Question&Answers more detail:os...

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

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sql - PostgreSQL where all in array

What is the easiest and fastest way to achieve a clause where all elements in an array must be matched - not only ... if querying for (1,2) See Question&Answers more detail:os...

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

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380 views

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java - PrintWriter and PrintStream never throw IOExceptions

Some days ago I realized that PrintWriter (as well as PrintStream) never throw an IOException when writing, flushing ... t that bad API design? 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 - How do you mute an embedded Youtube player?

I'm experimenting with the Youtube player but I can't get it to mute by default. function onPlayerReady() ... . Use iframe Embeds instead. See Question&Answers more detail:os...

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

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431 views

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python - Paramiko and Pseudo-tty Allocation

I'm trying to use Paramiko to connect to a remote host and execute a number of text file substitutions. i, ... do the same thing using paramiko? See Question&Answers more detail:os...

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

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subset - R gotcha: logical-and operator for combining conditions is & not &&

Why doesn't subset() work with a logical and && operator combining two conditions? > subset(tt, (customer_id==177 ... - my dataset is huge) 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# - Sorting an array of folder names like Windows Explorer (Numerically and Alphabetically) - VB.NET

I'm killing myself and dehydrating trying to get this array to sort. I have an array containing directories generated ... ... :D thanks. See Question&Answers more detail:os...

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

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177 views

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How to parse xml in Angular 2

I'm using an API that uses XML instead of JSON. Any suggestions on how to convert the following XML to JSON ... case-file.serial-number}}</div> 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 - How can elements be added to a wildcard generic collection?

Why do I get compiler errors with this Java code? 1 public List<? extends Foo> getFoos() 2 { 3 List<? ... still having the issue with Line 4. 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++ - Is the size of a struct required to be an exact multiple of the alignment of that struct?

Once again, I'm questioning a longstanding belief. Until today, I believed that the alignment of the following struct ... focus is on C++. 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 - apply a function over groups of columns

How can I use apply or a related function to create a new data frame that contains the results of the row ... data has some hundreds of columns. See Question&Answers more detail:os...

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

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iphone - Trying to read a Xcode Instruments .trace file. What is the file format of a .trace file?

I am writing an automated profiling system, to profile different GPU intensive screens in my App. I have been trying ... using XCode 4.6.1 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# - Check if a record exists in the database

I am using these lines of code to check if the record exists or not. SqlCommand check_User_Name = new ... record else // Insert record See Question&Answers more detail:os...

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

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310 views

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java - Spring batch Job read from multiple sources

How can I read items from multiples databases? I already know that is possible from files. the following example works ... > </property> </bean> See Question&Answers more detail:os...

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

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605 views

1 answer

google maps - Android MapActivity : Couldn't get connection factory client

I'm trying to get the Map demos working, as provided in the Google API sample projects. ?I am using AVDs and ... s really baffling me ?;) cheers See Question&Answers more detail:os...

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

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483 views

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user interface - Service starting a process wont show GUI C#

Hey, I am trying to get a service to start my program but it isn't showing the GUI. The process starts but ... why this isn't working? Thanks. See Question&Answers more detail:os...

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

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336 views

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button - Using JavaFX 2.2 Mnemonic (and accelerators)

I'm trying to make JavaFX Mnemonic work. I have some button on scene and what I want to achieve is to fire ... some way to make this work? See Question&Answers more detail:os...

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

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768 views

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google search with python requests library

(I've tried looking but all of the other answers seem to be using urllib2) I've just started trying to use requests ... to do what I am asking? See Question&Answers more detail:os...

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

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377 views

1 answer

regex - Best way to parse HTML in Javascript

I am having a lot of trouble learning RegExp and coming up with a good algorithm to do this. I have this string ... and advice you can give me. See Question&Answers more detail:os...

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

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710 views

1 answer

debugging - Is there a known issue relating to Windows 7 Kernel Symbols?

I have a few Windows 7 machines that I am not able to read their memory dumps. I found something that I suspect ... related to what I'm seeing? See Question&Answers more detail:os...

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

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588 views

1 answer

algorithm - How to partition an array of integers in a way that minimizes the maximum of the sum of each partition?

The inputs are an array A of positive or null integers and another integer K. We should partition A into K blocks ... is no bigger than 10'000 See Question&Answers more detail:os...

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

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291 views

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java - Read .txt file into 2D Array

There are a few of these topics out there, but this problem has a slight twist that makes it different. ... this program after using ArrayLists. See Question&Answers more detail:os...

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

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528 views

1 answer

css - Transparent rounded corners on Google Map

I need to make my google map V3 a full circle. I use CSS3 border radius on it, but it works correctly in ... at all. Any more ideas are needed See Question&Answers more detail:os...

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

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798 views

1 answer

how to disable home button in android?

i want to disable android device home button when my app runs. i have tried following code but it din't help : ... onNewIntent: HOME Key"); } } See Question&Answers more detail:os...

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

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633 views

1 answer

php - CodeIgniter MSSQL connection

I'm working on a web project that is to be deployed on a 64bit Windows 2008 Server machine running IIS 7.5 ... have any advice on solving 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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