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Wrong Manifest.mf in IntelliJ IDEA created .jar
...e a project using OptaPlanner 6.0.1 libraries into a .jar through IntelliJ IDEA's jar artifact but instead of my manifest.mf containing the standard
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add column to mysql table if it does not exist
...D my_additional_column varchar(2048) NOT NULL DEFAULT '';
END IF;
END $$
CALL upgrade_database_1_0_to_2_0() $$
DELIMITER ;
On a first glance it probably looks more complicated than it should, but we have to deal with following problems here:
IF statements only work in stored procedures, not w...
pinterest api documentation [closed]
Update Aug 2015: Pinterest provides it here now https://dev.pinterest.com/
10 Answers
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All Ruby tests raising: undefined method `authenticate' for nil:NilClass
...my tests are raising the following and I don't understand why. All methods call raise the 'authenticate' error. I've checked the code if there was a method called "authenticate" but there is no such method.
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Fixed size queue which automatically dequeues old values upon new enques
...with the queue values, all other functions but your new Enqueue will still call the original queue. In other words, although this answer is marked as accepted, it's completely and utterly broken.
– Gábor
Apr 22 '18 at 15:42
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Equivalent C++ to Python generator pattern
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I accepted your answer (thanks!) because it is technically correct for the question i gave. Do you have any pointers for techniques in cases where the sequence that needs to be generated is more complex, or am I just beating a dead horse here with C++ and really coroutines are ...
How the single threaded non blocking IO model works in Node.js
...de.js is built upon libuv, a cross-platform library that abstracts apis/syscalls for asynchronous (non-blocking) input/output provided by the supported OSes (Unix, OS X and Windows at least).
Asynchronous IO
In this programming model open/read/write operation on devices and resources (sockets, fil...
How do you check if a variable is an array in JavaScript? [duplicate]
... now goes 2/3 the speed!
So yet another update
Object.prototype.toString.call(variable) === '[object Array]';
This guy is the slowest for trying to check for an Array. However, this is a one stop shop for any type you're looking for. However, since you're looking for an array, just use the faste...
Getting a map() to return a list in Python 3.x
...56).decode('latin-1') which makes a str faster by avoiding Python function calls for each element in favor of a bulk conversion of all elements using only C level function calls. You can wrap the above in list if you really need a list of the individual characters, but since str is already an iterab...
UnicodeEncodeError: 'ascii' codec can't encode character u'\xa0' in position 20: ordinal not in rang
... read the Python Unicode HOWTO. This error is the very first example.
Basically, stop using str to convert from unicode to encoded text / bytes.
Instead, properly use .encode() to encode the string:
p.agent_info = u' '.join((agent_contact, agent_telno)).encode('utf-8').strip()
or work entirely ...