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What is meant by Resource Acquisition is Initialization (RAII)?

...ourceHandle { public: ManagedResourceHandle(RawResourceHandle* rawHandle_) : rawHandle(rawHandle_) {}; ~ManagedResourceHandle() {delete rawHandle; } ... // omitted operator*, etc private: RawResourceHandle* rawHandle; }; ManagedResourceHandle handle(createNewResource()); handle->perf...
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Unable to install gem - Failed to build gem native extension - cannot load such file — mkmf (LoadErr

...ing so i had to run open /Library/Developer/CommandLineTools/Packages/macOS_SDK_headers_for_macOS_10.14.pkg That didnt work for me at first because the version of CommandLineTools i had installed did not have the "Packages" folder. So i uninstalled and reinstalled like this: rm -rf /Library/Devel...
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How do I check if a file exists in Java?

...m there is an issue with stale file handles: bugs.java.com/bugdatabase/view_bug.do?bug_id=5003595 It's kind of obscure, but has been the cause of some frustrating bugs in production code before. – CAW Mar 17 '17 at 22:17 ...
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Makefile经典教程(入门必备) - C/C++ - 清泛网移动版 - 专注C/C++及内核技术

Makefile经典教程(入门必备)Linux_Shell_Classic_tutorialmakefile很重要 什么是makefile?或许很多Winodws的程序员都不知道这个东西,因为那些Windows的IDE都为你做了这个工作,但我觉得要作 makefile。makefile带来的好处就是——“自动化...
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What is the size of ActionBar in pixels?

... Thank you. I was trying to use @dimen/abc_action_bar_default_height directly (ActionBarComapt) and it worked (on mdpi device). But trying to get this value on Samsung Galaxy SIII returned me wrong value. That is because values-xlarge (somehow) is more preferred than...
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C++ lambda with captures as a function pointer

... @KerrekSB put the global variables in a namespace and mark them as thread_local, that's the ftw approach I chose for solving something similar. – Kjell Hedström Apr 21 '14 at 15:08 ...
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How to change background color in android app

... but isn't it easier just to use the hex value? – the_prole Jun 21 '14 at 9:31 it would be very easy, but bad practice...
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Reset auto increment counter in postgres

... column, then the sequence is not simply called product, but rather product_id_seq (that is, ${table}_${column}_seq). This is the ALTER SEQUENCE command you need: ALTER SEQUENCE product_id_seq RESTART WITH 1453 You can see the sequences in your database using the \ds command in psql. If you do \...
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深入理解 x86/x64 的中断体系 - 操作系统(内核) - 清泛网 - 专注C/C++及内核技术

...; *************************************************************** BOOT_SEG equ 0x7c00 ; boot module load into BOOT_SEG ;---------------------------------------------------------- ; Now, the processor is real mode ;---------------------------------------------------------...
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Get current time as formatted string in Go?

...4:05 MST 2006" userTimeString := "Fri Dec 6 13:05:05 CET 2019" t, _ := time.Parse(layout, userTimeString) fmt.Println("Server: ", t.Format(time.RFC850)) //Server: Friday, 06-Dec-19 13:05:05 CET mumbai, _ := time.LoadLocation("Asia/Kolkata") mumbaiTime := t.In(mumbai) f...