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What is the curiously recurring template pattern (CRTP)?
...e. If you want to see the corner case anyway even though it does not cause error see here: ideone.com/LPkktf
– odinthenerd
Dec 6 '13 at 9:01
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Facebook database design?
...ild it so that it will perform well but it clearly requires some trial and error and benchmarking.
Here is my disappointing test for just findings friends of friends:
DB Schema:
CREATE TABLE IF NOT EXISTS `friends` (
`id` int(11) NOT NULL,
`user_id` int(11) NOT NULL,
`friend_id` int(11) NOT N...
Using Linq to group a list of objects into a new grouped list of list of objects
...
Currently the code doesn't work and causes an error if you try to cast it to previous type of list. Because returning a List in select creates a Lists inside a list which is not the desired output here. For those who have problems I can suggest : var groupedCustomerList...
How can I mock dependencies for unit testing in RequireJS?
...n't work for me, for some reason, when I used it, the test framework threw errors:
TypeError: Cannot read property 'call' of undefined
RequireJs has the possibility to map module ids to other module ids. It also allows to create a require function that uses a different config than the global r...
iPhone - Grand Central Dispatch main thread
... dispatch_sync. You can't expect the system to protect you from programmer error all the time.
– Robin Summerhill
Oct 26 '11 at 22:14
2
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Cannot change column used in a foreign key constraint
I got this error when i was trying to alter my table.
3 Answers
3
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Multiple GitHub Accounts & SSH Config
...be to grab that key and add it to repo2's Deploy keys, but github.com will error out and tell you that the key is already being used.
Now you go and generate another key (using ssh-keygen -t rsa -C "alice@alice.com" without passwords of course), and so that this doesn't become a mess, you will now ...
Which Boost features overlap with C++11?
...see the list below
gamma function (tgamma), log gamma function (lgamma)
error functions (erf, erfc)
log1p, expm1
cbrt, hypot
acosh, asinh, atanh
TR1 (they are marked in the documentation if those are TR1 libraries)
Array → std::array
Bind → std::bind
Enable If → std::enable_if
Function...
Where to place $PATH variable assertions in zsh?
...sh terminal command was working correctly but zsh showed command not found error)
Solution:
just paste whatever you were earlier pasting in ~/.bashrc to:
~/.zshrc
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Grouped LIMIT in PostgreSQL: show the first N rows for each group?
...mn and I get "could not identify equality operator for type json postgres" error when I select distinct t_outer.section_id, t_top.*
– suat
May 10 at 11:35
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