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Why is a ConcurrentModificationException thrown and how to debug it

...his will throw a ConcurrentModificationException when the it.hasNext() is called the second time. The correct approach would be Iterator it = map.entrySet().iterator(); while (it.hasNext()) { Entry item = it.next(); it.remove(); } Assuming this iterator supports the remo...
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How to fix HTTP 404 on Github Pages?

... I had just one commit with all my files. I pushed an empty commit, refreshed the page and it worked. git commit --allow-empty -m "Trigger rebuild" git push If this doesn't work, as @Hendrikto pointed out in the comments, check out the Github status ...
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CreateWindow()动态创建一个EditBox - C/C++ - 清泛网 - 专注C/C++及内核技术

...建一个EditBox:在OnInitDialog()函数中: 创建EditBox HWND m_wndEdit = CreateWindow(_T("EDI...在Win32代码或MFC代码中动态创建一个EditBox: 在OnInitDialog()函数中: // 创建EditBox HWND m_wndEdit = CreateWindow(_T("EDIT"), 0, WS_CHILD | WS_VISIB...
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RESTful URL design for search

...lue&doors=4&type=sedan #I don't recommend using &* Or basically anything what isn't a slash as explained above. The formula: /cars[?;]color[=-:]blue[,;+&], * though I wouldn't use the & sign as it is unrecognizable from the text at first glance. ** Did you know that passi...
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Html5 data-* with asp.net mvc TextboxFor html attributes

... You could use underscore (_) and the helper is intelligent enough to do the rest: @Html.TextBoxFor( model => model.Country.CountryName, new { data_url = Url.Action("CountryContains", "Geo") } ) And for those who want to achieve the same...
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How can I find where Python is installed on Windows?

I want to find out my Python installation path on Windows. For example: 19 Answers 19 ...
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detect key press in python?

... Python has a keyboard module with many features. Install it, perhaps with this command: pip3 install keyboard Then use it in code like: import keyboard # using module keyboard while True: # making a loop try: # used try so that if user pressed other than the given ...
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How do I use cascade delete with SQL Server?

...o perform cascading delete in SQL Server when a record from T1 is deleted, all associated records in T2 also deleted. 8 An...
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windows service vs scheduled task

...ust need to figure out how to support failover... Original Answer: I'm really not a fan of Windows Scheduler. The user's password must be provided as @moodforall points out above, which is fun when someone changes that user's password. The other major annoyance with Windows Scheduler is that it r...
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Argparse optional positional arguments?

I have a script which is meant to be used like this: usage: installer.py dir [-h] [-v] 3 Answers ...