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调用空智能指针对象的函数，Windows及Linux行为解析 - C/C++ - 清泛网 - 专...
调用空智能指针对象的函数，Windows及Linux行为解析empty_shared_ptr_call先看结论：Windows下可以调用空智能指针对象的函数，但是函数中访问目标对象的成员变量会崩溃，this指针为nullptr；Linux下Debug版本及不开优化版本也能正常运行...
eclipse升级后启动失败：Heap堆内存不足 - 更多技术 - 清泛网 - 专注C/C++及内核技术
eclipse升级后启动失败：Heap堆内存不足eclipse_upgrade_outof_memory修改 eclipse ini，更改 -Xmx521m 为 -Xmx3g
本来打算从Eclipse（2020-06）更新一下（2021-03），没想到升级成后Eclipse启动不了，错误日志如下：
!SESSION 2021-06-16 17:03:13.186 ---------...
How to style a div to be a responsive square? [duplicate]
I want my div to adapt its height to always equal its width. The width is percental. When the parent's width decreases, the box should decrease by keeping its aspect ratio.
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Animate element to auto height with jQuery
I want to animate a <div> from 200px to auto height. I can’t seem to make it work though. Does anyone know how?
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How to change the pop-up position of the jQuery DatePicker control
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– Francisco Goldenstein
Sep 9 '14 at 18:32
Useless for anything other than trivial implementations as you'll not know wher...
Objective-C: difference between id and void *
...nowcrash
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answered Aug 20 '09 at 6:22
bbumbbum
160k2323 gold badges26...
How do I perform a Perl substitution on a string while keeping the original?
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I was wondering if something like my $new = $_ for $old =~ s/foo/bar; would work?
– Benoit
Apr 30 '14 at 17:11
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How to get MVC action to return 404
I have an action that takes in a string that is used to retrieve some data. If this string results in no data being returned (maybe because it has been deleted), I want to return a 404 and display an error page.
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Define global variable in a JavaScript function
...nswer.
– Stuntddude
Mar 7 '16 at 17:32
2
@Stuntddude you're probably right :( I started answering...
Cannot create an NSPersistentStoreCoordinator with a nil model
... Your right. It's null and so this line is causing the error: ` __persistentStoreCoordinator = [[NSPersistentStoreCoordinator alloc] initWithManagedObjectModel: [self managedObjectModel]];` Changing to mom doesn't seem to fix anything though
– Dominic Williams
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