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python - How to use a conditional statement based on DataFrame boolean value in pandas

Now I know how to check the dataframe for specific values across multiple columns. However, I cant seem to ... do something else: do something See Question&Answers more detail:os...

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

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algorithm - Can an array be grouped more efficiently than sorted?

While working on example code for an algorithm question, I came across the situation where I was sorting an input ... space, if there are any. See Question&Answers more detail:os...

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

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parsing - Convert html to plain text in VBA

I have an Excel sheet with cells containing html. How can I batch convert them to plaintext? At the moment ... and retrieve the data back. 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 to use custom JTable cell editor and cell renderer

I have created a JTable with a custom table render and custom cell editor which gives the result in the image I ... tell me how to solve 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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c# - Mixing Fluent API and DataAnnotations in EF code first

While we mostly use fluent configuration for our code-first POCOs, we have found it useful to use data annotations ... currently using EF 4.3.1 See Question&Answers more detail:os...

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

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google api - How can I convert image binary from API call to data URI in Javascript?

The Google API I'm using is transmitting images only as binary data. I have absolutly no idea how to put this ... uri??? Thanks for any help See Question&Answers more detail:os...

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

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linux - SUID not working with shell script

I have created a small shell script with the following content: cat /usr/bin/checksuid.sh !/bin/bash echo " ... that why SUID is not working? See Question&Answers more detail:os...

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

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regex - parsings strings: extracting words and phrases [JavaScript]

I need to support exact phrases (enclosed in quotes) in an otherwise space-separated list of terms. Thus ... help would be greatly appreciated! See Question&Answers more detail:os...

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

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ajax - Annoying javascript timezone adjustment issue

I have set up a JSON endpoint that returns the current time from server. For example: { "myservertime": "2011-10 ... time not the local time... See Question&Answers more detail:os...

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

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pyqt - How Can I Update a Qml Object's Property from my Python file?

I want to show a rectangle in Qml and I want to change the rectangle's properties(width, length) from my python ... "__main__": sys.exit(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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asp.net mvc - Unbuffered Output Very Slow

I generate a very large .csv file from a database using the method outlined in https://stackoverflow. ... appreciable difference in performance. 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# - How to know when was Windows started or shutdown?

I need to develop a program in C# find out when was Windows started or shutdown. Is there a log file ... answer is found under this question. 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 - jqPlot DateAxis tickInterval not working

I'm trying to draw a chart with a single datapoint each month. I'm sending this through to jqPlot as a single ... better ideas I'll 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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c# - Discrete Anonymous methods sharing a class?

I was playing a bit with Eric Lippert's Ref<T> class from here. I noticed in the IL that it looked like both ... // end of method Program::joik 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 - Preserving large numbers

I am trying to read a CSV file that has barcodes in the first column, but when R gets it into a ... back to an integer returns 167000000000. 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: can't assign to literal

My task is to write a program that asks the user to enter 5 names which it stores in a list. Next, it ... be able to generate a random name. See Question&Answers more detail:os...

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

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row - R dplyr rowwise mean or min and other methods?

How can I get with dplyr the minimum (or mean) value of each row on a data.frame? I mean the same result as apply ... B=rnorm(10), C=rnorm(10)) See Question&Answers more detail:os...

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

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cryptography - Generating X509 Certificate using Bouncy Castle Java

I am looking for an example or tutorial to generate X509 Certificates using BC in Java. A lot of example are ... and private keys to files] See Question&Answers more detail:os...

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

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uitableview - How to Draw a single point line in iOS

I was wondering what is the best way to draw a single point line? My goal is to draw this line in a ... hear about a better way. 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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iequalitycomparer - Checking for equality in Objective-C

How do i check the key in dictionary is same as the string in method parameter? i.e in below code , dictobj is ... { //do some operation } } } 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 - Merge error : negative length vectors are not allowed

I tried to merge two data.frames, and they are like below: GVKEY YEAR coperol delta vega firm_related_wealth 1 ... how to solve this issue. See Question&Answers more detail:os...

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

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google chrome - Why do browser implementations of HTTP/2 require TLS?

Why does most modern browsers require TLS for HTTP2? Is there a technical reason behind this? Or simply just to ... ://caniuse.com/#feat=http2 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# - Replacing the parameter name in the Body of an Expression

I'm trying to dynamically build up expressions based on a Specification object. I've created an ExpressionHelper class ... them with a's? See Question&Answers more detail:os...

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

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ant - CreateProcess error=206, The filename or extension is too long

I'm trying to call Findbugs via Ant, but receiving this error: Cannot run program "C:Program Files (x86)Javajre6injavaw ... can I fix this? o.O 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# - Opening a URL in a new tab

I have an url like Response.Redirect("~/webpages/frmCrystalReportViewer.aspx?VoucherNo=" + txtVoucherNo.Text + " ... . Thanks in advance. See Question&Answers more detail:os...

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

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numpy - polynomial regression using python

From what I understand polynomial regression is a specific type of regression analysis, which is more complicated than ... a non-linear line? See Question&Answers more detail:os...

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

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AngularJS Upgrade (1.5 to 1.6,1.7) Makes directive scope bindings undefined

I have the following code: angular .module('myApp') .directive('layout', function () { return { restrict: ... the directive in my controller? See Question&Answers more detail:os...

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

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openCV 2.4.3 iOS framework compiler trouble recognising some c++ headers

openCV 2.4.3 / Xcode 4.5.2 / mac osx 10.8.2 I am trying to get openCV working with iOS. I am ... + header? how do I enable SURF support? See Question&Answers more detail:os...

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

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