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Is effective C++ still effective?
From what I saw in this post I decided to start reading the book Effective C++ .
3 Answers
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Difference between API and ABI
...rface
This is the set of public types/variables/functions that you expose from your application/library.
In C/C++ this is what you expose in the header files that you ship with the application.
ABI: Application Binary Interface
This is how the compiler builds an application.
It defines things (b...
Cannot push to Heroku because key fingerprint
...to fix my second account, it would not take until I removed my default key from the first account. SSH-AGENT will send the first key by default, causing this problem. The fix is to create specific keys for heroku (not the default) for each account
– Tom Carchrae
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“unary operator expected” error in Bash if condition
...the variable expansion and the variable is undefined or empty, it vanishes from the scene of the crime, leaving only
if [ = "and" ];
which is not a valid syntax. (It would also fail with a different error message if $aug1 included white space or shell metacharacters.)
The modern [[ operator has...
Why is my Spring @Autowired field null?
... top of your answer that explains that retrieving the first bean, the root from which you do everything, should be done through the ApplicationContext. Some users (for which I've closed as duplicates) don't understand this.
– Sotirios Delimanolis
Oct 18 '14 at ...
Default string initialization: NULL or Empty? [closed]
...to use String.Compare? Should I be creating an Enum and parsing into it?
From this perspective, one gets to a philosophy of code that's pretty simple: you avoid examining a string's contents wherever possible. Comparing a string to String.Empty is really just a special case of comparing it to a ...
C++ cout hex values?
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This seems to change all future output from cout to hex; so if you only want 'a' to be printed in hex you may want something like cout << hex << a << dec; to change it back.
– ShreevatsaR
Mar 9 '12 at 10:00
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Java generics T vs Object
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Isolated from context - no difference. On both t and obj you can invoke only the methods of Object.
But with context - if you have a generic class:
MyClass<Foo> my = new MyClass<Foo>();
Foo foo = new Foo();
Then:
Foo ...
Git diff --name-only and copy that list
...ead, that says to put them where the later REPLACE is. (That's a nice tip from this Server Fault answer.)
The -a parameter to rsync means to preserve permissions, ownership, etc. if possible. The -R means to use the full relative path when creating the files in the destination.
Update: if you ha...
Disable Rails SQL logging in console
...ion I consider somewhat cleaner, that still allows potential other logging from AR. In config/environments/development.rb :
config.after_initialize do
ActiveRecord::Base.logger = Rails.logger.clone
ActiveRecord::Base.logger.level = Logger::INFO
end
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