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All Ruby tests raising: undefined method `authenticate' for nil:NilClass
...er! function is part of Rails 3 (using the new devise feature, of which I know little about). If the app can't find the User model (either because of namespace issues or whatever reason) then the method will fail. The "enki" application you linked to is now a Rails 3 application. It could be expe...
Is returning by rvalue reference more efficient?
...e following
Beta_ab
Beta::toAB() const {
return Beta_ab(1, 1);
}
Now, it's properly moving a temporary Beta_ab object into the return value of the function. If the compiler can, it will avoid the move altogether, by using RVO (return value optimization). Now, you can do the following
Beta...
Update a dataframe in pandas while iterating row by row
...
now set_value is also deprectated, and should use .at (or .iat), so my loop looks like this: for i, row in df.iterrows(): ifor_val = something if <condition>: ifor_val = something_else df.at[i,'ifor'] = ifor_...
Generating v5 UUID. What is name and namespace?
...ducible UUID for each namespace using "uuid -v5 $ROOTUUID $NAMESPACENAME". Now you can create unique UUIDs for keys within a namespace using "uuid -v5 $NAMESPACEUUID $KEY". These UUIDs can be thrown into a single key-value store with high probability of avoiding collision. This process can be repea...
Schrödingers MySQL table: exists, yet it does not
...t on and try to recreate the table, it only creates the .ibd file. .frm is nowhere to be found. This only applies to a certain table (10+ others are created with correct files). Deleting that orphan ibd doesn't help anything anyway
– Corkscreewe
May 18 '12 at 1...
Use Visual Studio web.config transform for debugging [duplicate]
...et-web-projects-web-debug-config-web-release-config/.
Here is the summary.
Now let’s see how we can enable what the question asker wants to do.
To recap, when he builds on a particular configuration he wants a specific transform to be applied to web.config. So obviously you do not want to maintain...
PHP PDO: charset, set names?
... It's worth noting that this behaviour changed in 5.3.6, and is now working correctly.
– igorw
Nov 10 '11 at 10:47
...
How to format a java.sql Timestamp for displaying?
...D %1$TT", timestamp)
EDIT:
please see the documentation of Formatter to know what TD and TT means: click on java.util.Formatter
The first 'T' stands for:
't', 'T' date/time Prefix for date and time conversion characters.
and the character following that 'T':
'T' Time formatted ...
iPhone system font
... the situation. Personally, I wish I had hardcoded Helvetica... doing that now.
– Dan Rosenstark
Aug 22 '13 at 0:06
To...
Shell one liner to prepend to a file
...table, and should not be relied upon for anything even vaguely important.
Now, with all that out of the way the answer was:
Creating another file descriptor for the file (exec 3<> yourfile) thence writing to that (>&3) seems to overcome the read/write on same file dilemma. Works for...