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I need to write a custom batch File renamer. I've got the bulk of it done except I can't figure out how to ... program. Any ideas on how I can make this work? Question&Answers:os...

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

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utf 8 - How do I use filesystem functions in PHP, using UTF-8 strings?

I can't use mkdir to create folders with UTF-8 characters: <?php $dir_name = "Depósito"; mkdir($dir_name); ?> ... Dep?3sito What should I do? I'm using php5 Question&Answers:os...

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

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javascript - How to populate a cascading Dropdown with JQuery

i have the following problem: I started to create a form with HTML an JS and there are two Dropdowns (Country and City ... i can't see the wood for the trees. Question&Answers:os...

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

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How perform validation and display error message in same form in JSP?

How can I display an error message in the very same JSP when a user submits a wrong input? I do not intend to throw an exception and show an error page. Question&Answers:os...

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

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199 views

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html - Bootstrap full-width with 2 different backgrounds (and 2 columns)

It's a little bit hard to explain, that's why i also can't find the answer on Google. I'm working with ... if this is possible and how? Thanks for your help! Question&Answers:os...

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

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java - Selenium WebDriver throws Exception in thread "main" org.openqa.selenium.ElementNotInteractableException

Test Scenario: Trying to capture and test Gmail Login. Current Output: Mozilla instance opens up. Username is entered ... .Tyc9J")); wePass.sendKeys("test1"); Question&Answers:os...

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

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sql - get a comma delimited string from rows

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

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481 views

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c# - PictureBox PaintEvent with other method

There is only one picturebox in my form and I want to drawcircle with a method on this picturebox but I cant ... Graphics.FromImage(Circle()); gfx=e.Graphics; } Question&Answers:os...

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

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java - How can I convert a stack trace to a string?

What is the easiest way to convert the result of Throwable.getStackTrace() to a string that depicts the stacktrace? Question&Answers:os...

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

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How to access data/data folder in Android device?

I am developing an app and I know my database *.db will appear in data/data/com.****.*** I can access ... for the directory data/data..... without rooting it? Question&Answers:os...

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

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jquery - Determine if $.ajax error is a timeout

I'm utilizing the magic of jQuery.ajax( settings ). However, I'm wondering if anyone has played with the ... Does anyone know how to work more with timeout? Question&Answers:os...

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

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java - Could not calculate build plan: Plugin org.apache.maven.plugins:maven-resources-plugin:2.5 or one of its dependencies could not be resolved

org.apache.maven.plugin.PluginResolutionException: Plugin org.apache.maven.plugins:maven-resources-plugin:2.5 or one ... Maven Dependencies to the build path. Question&Answers:os...

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

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621 views

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javascript - Why does instanceof return false for some literals?

"foo" instanceof String //=> false "foo" instanceof Object //=> false true instanceof Boolean //=> false true ... and Chrome. So, at least it's consistent. Question&Answers:os...

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

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python - How to process SIGTERM signal gracefully?

Let's assume we have such a trivial daemon written in python: def mainloop(): while True: # 1. do # 2. ... so that mainloop() had a chance to stop gracefully? Question&Answers:os...

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

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python - Find all occurrences of a key in nested dictionaries and lists

I have a dictionary like this: { "id" : "abcde", "key1" : "blah", "key2" : "blah blah", "nestedlist" : [ ... , "fghi", "asdf", "yuiop"] Order is not important. 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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typescript - 'unknown' vs. 'any'

TypeScript 3.0 introduces unknown type, according to their wiki: unknown is now a reserved type name, as it is ... any? When should we use unknown over any? 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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ruby on rails - how to permit an array with strong parameters

I have a functioning Rails 3 app that uses has_many :through associations which is not, as I remake it ... , :province_id, :city, :category_ids) end Question&Answers: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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python - why should I make a copy of a data frame in pandas

When selecting a sub dataframe from a parent dataframe, I noticed that some programmers make a copy of the data frame ... will happen if I don't make a copy? 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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python - Unable to allocate array with shape and data type

I'm facing an issue with allocating huge arrays in numpy on Ubuntu 18 while not facing the same issue on MacOS. I ... > 1.17.0 PS: also failed on Google Colab Question&Answers:os...

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

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100 views

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.net - Set global hotkeys using C#

I need to capture a key press when my program is not in focus. (ie. Ctrl+Alt+J) and trigger an ... static extern int UnregisterHotKey(IntPtr hwnd, int id); Question&Answers:os...

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

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Must declare function prototype in C?

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

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187 views

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C++ Cross-Platform High-Resolution Timer

I'm looking to implement a simple timer mechanism in C++. The code should work in Windows and Linux. The ... . What is the best tool to accomplish this? Question&Answers:os...

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

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91 views

1 answer

java - Why retrieving Google Directions for Android using KML data is not working anymore?

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

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485 views

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c# - Should I avoid 'async void' event handlers?

I know it is considered generally a bad idea to use fire-and-forget async void methods to start tasks, ... async event handlers, besides possible re-entrancy? 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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r - Cleaning up factor levels (collapsing multiple levels/labels)

What is the most effective (ie efficient / appropriate) way to clean up a factor containing multiple levels that need to be ... "Yes", No="No", N="No")) Question&Answers:os...

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

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279 views

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sequence points in c

A sequence point in imperative programming defines any point in a computer program's execution at which it is ... somebody please explain it in simple words? Question&Answers:os...

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

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306 views

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java - Collect successive pairs from a stream

Given a stream such as { 0, 1, 2, 3, 4 }, how can I most elegantly transform it into given form: { ... The answer should be general for a stream of any type. Question&Answers:os...

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

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247 views

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c++ - Inline functions vs Preprocessor macros

How does an inline function differ from a preprocessor macro? Question&Answers:os...

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

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