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How to initialize all members of an array to the same value in Swift?
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170
Actually, it's quite simple with Swift. As mentioned in the Apple's doc, you can initialize an...
What does the “@” symbol mean in reference to lists in Haskell?
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180
Yes, it's just syntactic sugar, with @ read aloud as "as". ps@(p:pt) gives you names for
th...
JSON: why are forward slashes escaped?
... you to do that, it allows you to do that. It also allows you to use "\u0061" for "A", but it's not required. Allowing \/ helps when embedding JSON in a <script> tag, which doesn't allow </ inside strings, like Seb points out.
Some of Microsoft's ASP.NET Ajax/JSON API's use this loophole t...
Java packages com and org
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114
According to Sun, packages should be namespaced according to the inverse of your domain name, ...
HttpSecurity, WebSecurity and AuthenticationManagerBuilder
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126
configure(AuthenticationManagerBuilder) is used to establish an authentication mechanism by al...
how to convert a string to date in mysql?
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261
As was told at MySQL Using a string column with date text as a date field, you can do
SELECT ...
Why is $$ returning the same id as the parent process?
...bash 4, you can get the process ID of the child with BASHPID.
~ $ echo $$
17601
~ $ ( echo $$; echo $BASHPID )
17601
17634
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How to change column datatype from character to numeric in PostgreSQL 8.4
...ending on your data):
alter table presales alter column code type numeric(10,0) using code::numeric;
-- Or if you prefer standard casting...
alter table presales alter column code type numeric(10,0) using cast(code as numeric);
This will fail if you have anything in code that cannot be cast to nu...
How to restart a rails server on Heroku?
...hrc or .bash_aliases file as described at:
https://askubuntu.com/questions/17536/how-do-i-create-a-permanent-bash-alias and
Creating permanent executable aliases
Then you can just type hra app_name
You can restart a specific remote, e.g. "staging" with:
heroku restart -a app_name -r remote_name
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How does Git handle symbolic links?
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1381
Git just stores the contents of the link (i.e. the path of the file system object that it lin...