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What is the advantage of GCC's __builtin_expect in if else statements?
...the effects of that jump should be accounted for by the branch predictor. One assumption for __builtin_expect is usually that all things are not equal... there is a slow path and a fast path, and you as the programmer happen to know which path is most likely to be used.
– Adam...
2 column div layout: right column with fixed width, left fluid
My requirement is simple: 2 columns where the right one has a fixed size . Unfortunately I couldn't find a working solution, neither on stackoverflow nor in Google. Each solution described there fails if I implement in my own context. The current solution is:
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H2 in-memory database. Table not found
...ving case-sensitive, even though in all scripts (including in the creation ones) i used lowercase.
Solved by adding ;DATABASE_TO_UPPER=false to the connection URL.
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Synchronization vs Lock
...ings where you can't acquire and release in such a clean manner. I would honestly prefer to avoid using bare Locks in the first place, and just go with a more sophisticated concurrency control such as a CyclicBarrier or a LinkedBlockingQueue, if they meet your needs.
I've never had a reason to use...
Permission denied (publickey) when deploying heroku code. fatal: The remote end hung up unexpectedly
...id_rsa.pub
If you don't have a public key, Heroku will prompt you to add one automatically which works seamlessly. Just use:
heroku keys:add
To clear all your previous keys do :
heroku keys:clear
To display all your existing keys do :
heroku keys
EDIT:
The above did not seem to work for...
Merge multiple lines (two blocks) in Vim
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del deletes the given lines. It can take a register argument, but when one is not given, it dumps the lines to the unnamed register, @", just like deleting in normal mode does. let l=split(@") then splits the deleted lines into a list, using the default delimiter: whitespace. To work properly ...
Nodejs Event Loop
...ve until the script ends. CPU bound operation - execute in-line, I/O bound ones, request to the machinery as above.
When I/O completes, the listeners are called back.
The event machinery above is called libuv AKA event loop framework. Node leverages this library to implement its event driven progr...
What is the difference between String and string in C#?
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I always use the aliases because I've assumed one day it might come in handy because they are acting as an abstraction, so therefore can have their implementations changed without me having to know.
– Rob
Oct 12 '12 at 23:25
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Why do some websites add “Slugs” to the end of URLs? [closed]
Many websites, including this one, add what are apparently called slugs - descriptive but as far as I can tell useless bits of text - to the end of URLs.
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Architecture for merging multiple user accounts together
...e accounts, the solution is pretty simple. While the user is logged in on one of the accounts, he logs into another which he previously used to log into the site (via the control panel feature above). The web service detects this collision (that the local identity of the logged-in user differs fro...