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c# - Differences between IQueryable, List, IEnumerator?

I am wondering what the difference between IQueryable, List, IEnumerator is and when I should use each one? For ... the advantages of using it over the list. Question&Answers:os...

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

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378 views

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python - Normalize data in pandas

Suppose I have a pandas data frame df: I want to calculate the column wise mean of a data frame. This is ... to do that Any help/pointers are much appreciated. 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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android - How can I get a Dialog style activity window to fill the screen?

I am using an activity with the dialog theme set, and I want it to be full screen. I tried all sorts ... full screen size without its content resizing as well? Question&Answers:os...

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

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vscode settings - How do I change color of comments in visual studio code?

I went through https://code.visualstudio.com/docs/getstarted/theme-color-reference but can't seem to find the setting ... little bit so I can read it better. Question&Answers:os...

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

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WCF ChannelFactory vs generating proxy

Just wondering under what circumstances would you prefer to generate a proxy from a WCF service when you can just ... a proxy when the server is updated? Thanks Question&Answers:os...

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

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c - What do the parentheses around a function name mean?

In one of my project source files, I found this C function definition: int (foo) (int *bar) { return foo ( ... ? What is going on here with the recursive call? Question&Answers:os...

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

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c - Pointer to pointer clarification

I was following this tutorial about how does a pointer to a pointer work. Let me quote the relevant passage: int i ... is ipp still pointing to ip1 but not ip2? Question&Answers:os...

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

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linux - Can I change 'rpath' in an already compiled binary?

I have an old executable that's scheduled for the scrap heap, but it's not there yet. It relies on some libs ... things to locations and they can't be moved? Question&Answers:os...

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

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version - Upgrade python in a virtualenv

Is there a way to upgrade the version of python used in a virtualenv (e.g. if a bugfix release comes out)? I could pip ... , but what about 2.7.x -> 2.7.y? Question&Answers:os...

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

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concurrency - .NET - Dictionary locking vs. ConcurrentDictionary

I couldn't find enough information on ConcurrentDictionary types, so I thought I'd ask about it here. ... Reference to .NET 4.0's ConcurrentDictionary Question&Answers:os...

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

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292 views

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javascript - Knockout.js incredibly slow under semi-large datasets

I'm just getting started with Knockout.js (always wanted to try it out, but now I finally have an excuse! ... would dynamically load in more data as you scroll. Question&Answers:os...

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

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260 views

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python - Using cProfile results with KCacheGrind

I'm using cProfile to profile my Python program. Based upon this talk I was under the impression that KCacheGrind ... Versions KCacheGrind 4.3.1 Python 2.6.2 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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android - Pinch zoom for custom view

I have created my custom view and I want to apply pinch zoom for my custom view. How to do that? Question&Answers:os...

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

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vue.js - How to implement debounce in Vue2?

I have a simple input box in a Vue template and I would like to use debounce more or less like this: < ... The filterkey is then used later in computed props. Question&Answers:os...

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

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excel - Save each sheet in a workbook to separate CSV files

How do I save each sheet in an Excel workbook to separate CSV files with a macro? I have an excel with ... you to save all sheets to different CSV files. Question&Answers:os...

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

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285 views

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Get long live access token from Facebook

As I understand it, recently Facebook has decided to remove the offline_access permission and has introduced a ... token with the Facebook JavaScript SDK? Question&Answers:os...

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

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command line - How do I get the name of the current executable in C#?

I want to get the name of the currently running program, that is the executable name of the program. In C/C++ you get it from args[0]. Question&Answers:os...

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

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135 views

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jquery - How to check if an option is selected?

$('#mySelectBox option').each(function() { if ($(this).isChecked()) alert('this option is selected'); else alert ... what is the proper way to do this? Thanks. Question&Answers:os...

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

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106 views

1 answer

Allow all remote connections, MySQL

I had been using SQL Server and am now using MySQL for a project. With SQL Server, our developers can ... to give everyone access to a production database. Question&Answers:os...

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

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java - Where to stop/destroy threads in Android Service class?

I have created a threaded service the following way: public class TCPClientService extends Service{ ... ... all threads before terminating the application? Question&Answers:os...

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

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98 views

1 answer

How to use a switch case 'or' in PHP

Is there a way of using an 'OR' operator or equivalent in a PHP switch? For example, something like this: switch ( ... the value is either 1 or 2'; break; } Question&Answers:os...

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

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229 views

1 answer

Can you write virtual functions / methods in Java?

Is it possible to write virtual methods in Java, as one would do in C++? Or, is there a proper ... similar behavior? Could I please have some examples? Question&Answers:os...

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

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227 views

1 answer

How can I create a "tooltip tail" using pure CSS?

I just came across a neat CSS trick. Check out the fiddle... .tooltiptail { display: block; border-color: #ffffff ... <div class="anothertail"></div> </div> Question&Answers:os...

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

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138 views

1 answer

iphone - Curve text on existing circle

For an application I am building I have drawn 2 circles. One a bit bigger than the other. I want to ... png"]; return [UIImage imageWithCGImage:contextImage]; } Question&Answers:os...

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

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1.6k views

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web services - How can I pass windows authentication to webservice using jQuery?

I'm using jQuery to call a .Net web service like this: var service_url = "https://example.com/myservice. ... can use 1 master credential for all service calls. Question&Answers:os...

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

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363 views

1 answer

http - Should I URL-encode POST data?

I'm POSTing data to an external API (using PHP, if it's relevant). Should I URL-encode the POST ... , CURLOPT_RETURNTRANSFER, 1); $response = curl_exec($ch); Question&Answers:os...

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

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309 views

1 answer

html - Bootstrap 3 Glyphicons CDN

PAY ATTENTION! The Bootstrap icons are back after this pull request merge. After going back and forth on this ... the repository and include it into my project. Question&Answers:os...

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

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61 views

1 answer

java - Dynamic ListView in Android app

Is there a working example out there that demonstrates how to append additional rows in ListView dynamically? ... Any advice how to accomplish this? Nicholas Question&Answers:os...

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

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