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string - How to replace case-insensitive literal substrings in Java

Using the method replace(CharSequence target, CharSequence replacement) in String, how can I make the target case- ... so that both examples return "Bar"? Question&Answers:os...

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

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r - Read all files in directory and apply multiple functions to each data frame

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

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Filtering collections in C#

I am looking for a very fast way to filter down a collection in C#. I am currently using generic List< ... in place so there is no temporary list required? Question&Answers:os...

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

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c# - Collection was modified; enumeration operation may not execute in ArrayList

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

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vba - What is the difference between Dim, Global, Public, and Private as Modular Field Access Modifiers?

In VB6/VBA, you can declare module-level variables outside of a specific Sub or Function method. I've used Private ... fields? If so, how are they different? Question&Answers:os...

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

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c# - Is everything in .NET an object?

Please help us settle the controversy of "Nearly" everything is an object (an answer to Stack Overflow question As a ... vs. "object" as a reference type." Question&Answers:os...

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

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c# - Casting a result to float in method returning float changes result

Why does this code print False in .NET 4? It seems some unexpected behavior is being caused by the explicit cast. ... now fails after the upgrade to .NET 4. Question&Answers:os...

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

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python - Faster way to read Excel files to pandas dataframe

I have a 14MB Excel file with five worksheets that I'm reading into a Pandas dataframe, and ... ' site_names_OTT,df_list_OTT = make_OTT_df(FILEDIR,OTT_FILE) Question&Answers:os...

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

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Reading Unicode file data with BOM chars in Python

I'm reading a series of source code files using Python and running into a unicode BOM error. Here's my code: ... remove the BOM from the string to prevent this? Question&Answers:os...

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

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asp.net - Why will <%= %> expressions as property values on a server-controls lead to a compile errors?

This question is a result of what i noticed while trying to answer another question. And now im curious to know why < ... not allowed to use <%= %> like that? Question&Answers:os...

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

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How do you do non-blocking console I/O on Linux in C?

How do you do nonblocking console IO on Linux/OS X in C? Question&Answers:os...

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

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Print series of prime numbers in python

I was having issues in printing a series of prime numbers from one to hundred. I can't figure our what's wrong with ... % i == 0: break else: print(num) break Question&Answers:os...

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

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Find how many times duplicated rows repeat in R data frame

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

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Is it possible to override JavaScript's toString() function to provide meaningful output for debugging?

When I console.log() an object in my JavaScript program, I just see the output [object Object], which is ... Is there anything similar I can do in JavaScript? Question&Answers:os...

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

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java - How to implement enum with generics?

I have a generic interface like this: interface A<T> { T getValue(); } This interface has limited instances, hence it ... return 0; } }; } Any idea about this? Question&Answers:os...

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

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Load local HTML file in a C# WebBrowser

In my app I have a WebBrowser element. I would like to load a local file in it. I have some ... Webbrowser. webBrowser1.Navigate(@".Documentationindex.html"); Question&Answers:os...

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

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The $.param( ) inverse function in JavaScript / jQuery

Given the following form: <form> <input name="foo" value="bar"> <input name="hello" value="hello world"> </ ... : 'hello world'} Reference: jQuery.param( obj ). Question&Answers:os...

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

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How to replace substring in mongodb document

I have a lot of mongodb documents in a collection of the form: { .... "URL":"www.abc.com/helloWorldt/ ... can I achieve this for all documents in my collection? Question&Answers:os...

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

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css - Should I specify height and width attributes for my IMGs in HTML?

If I know the height and width of an image that I'm going to display with an image tag, should I include the ... jpg" style="height: 64px; width: 64px;" /> Question&Answers:os...

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

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.net - Can I use a Regex in an XPath expression?

Something like .//div[@id='food+] to capture div tags with id='foo123'. I'm using .NET, if that matters. Question&Answers:os...

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

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274 views

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c# - Alphanumeric sorting using LINQ

I have a string[] in which every elements ends with some numeric value. string[] partNumbers = new string[] ... ABC11 ABC2 Expected Result AB1 AB2 AB11 .. Question&Answers:os...

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

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497 views

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android - show an alert dialog in broadcast receiver after a system reboot

Good day, I am trying to show an alert dialog after a system reboot in a broadcast ... android.app.ActivityThread.handleReceiver(ActivityThread.java:1994) Question&Answers:os...

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

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90 views

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javascript - Drawing a line with three.js dynamically

This is what I'd like to achieve (a modifiable polygon where the red circles are vertices) and I'd like to ... it multiple times. Is there any way around it? Question&Answers:os...

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

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193 views

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java - Using File.listFiles with FileNameExtensionFilter

I would like to get a list of files with a specific extension in a directory. In the API (Java 6), I see ... than write my own. What am I doing wrong? Question&Answers:os...

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

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313 views

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Remove Text Between Parentheses PHP

I'm just wondering how I could remove the text between a set of parentheses and the parentheses themselves in php ... delete (Test1) and only leave ABC Thanks Question&Answers:os...

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

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284 views

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math - Representing 128-bit numbers in C++

What's the best way to represent a 128-bit number in C++? It should behave as closely to the built-in numeric types ... be extended to 256-bit, 512-bit, etc... Question&Answers:os...

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

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149 views

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PHP Session data not being saved

I have one of those "I swear I didn't touch the server" situations. I honestly didn't touch any of the php scripts ... for my hosts' server (PHP Version 4.4.7): Question&Answers:os...

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

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216 views

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Does PHP time() return a GMT/UTC Timestamp?

I just want to check if time() returns a UTC/GMT timestamp or do I need to use date_default_timezone_set()? Question&Answers:os...

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

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