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if, elif, else statement issues in Bash
...if[). Only after having parsed the statement it would be executed (and an error message like elif[: command not found would be output).
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Proper way to rename solution (and directories) in Visual Studio
...essary to restart because otherwise it can get confused and you get stupid errors
– Simon_Weaver
Jan 15 '13 at 3:08
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The differences between .build, .create, and .create! and when should they be used?
...ore succinct.
.create! is equivalent to .new followed by .save! (throws an error if saving fails). It's also just a wee bit shorter
I think .build is mostly an alias for .new. It works one way in Rails 3 and another way in Rails < 3.x
The most important part, however, is that these methods can...
How to install Maven 3 on Ubuntu 18.04/17.04/16.10/16.04 LTS/15.10/15.04/14.10/14.04 LTS/13.10/13.04
...ollowing:
set it up from scratch
repair it if apt-get update gives a 404 error after add-apt-repository
repair it if apt-get update gives a NO_PUBKEY error after manually adding it to /etc/apt/sources.list
Open a terminal and run the following:
sudo -i
Enter your password if necessary, then p...
What is __gxx_personality_v0 for?
.... I added CPPFLAGS += -fno-exceptions to my makefile, and that solved the error.
– Alan Kinnaman
Jun 14 '16 at 22:56
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How to stop mysqld
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I got this error for that: ERROR 1045 (28000): Access denied for user 'root'@'localhost' (using password: NO)
– 2myCharlie
Aug 1 '18 at 20:09
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How to print SQL statement in codeigniter model
... when i use $this->db->_compile_select(); i get Fatal error: Call to protected method CI_DB_active_record::_compile_select() from
– Angelin Nadar
Dec 19 '12 at 13:41
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RVM is not a function, selecting rubies with 'rvm use …' will not work
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@AdityaPednekar So, sometimes reading the error/console message actually helps, RVM is not a function, selecting rubies with 'rvm use ...' will not work. You need to change your terminal emulator preferences to allow login shell. Sometimes it is required to use /b...
C++静态和多态，亦敌亦友 - C/C++ - 清泛网 - 专注C/C++及内核技术
...代码编译不能通过。显示如下信息：
stawithvir.cpp:19:17: error: ‘static void DerivedAgain::foo()’ cannot be declared
stawithvir.cpp:13:10: error: since ‘virtual void Derived::foo()’ declared in base class
很明显，编译不能通过的原因，是在De...
Maximum Java heap size of a 32-bit JVM on a 64-bit OS
...JVM can allocate up to 1577MiB:
[C:scratch]> java -Xmx1600M MaxMemory
Error occurred during initialization of VM
Could not reserve enough space for object heap
Could not create the Java virtual machine.
[C:scratch]> java -Xmx1590M MaxMemory
Total Memory: 2031616 (1.9375 MiB)
Max Memory: 16...