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How to organize a node app that uses sequelize?
...rstand Sequelize, but to me doing things more than just selecting from one table wasn't really convenient. And where ordinarily you would use select from two or more tables, or a union in pure SQL, you would have to run separate queries, and with the async nature of Node it's just added complexity. ...
Undefined reference to `sin` [duplicate]
...As a result, you can compile your .o object files, but not build your executable.
As Paul has already mentioned add "-lm" to link with the math library in the step where you are attempting to generate your executable.
In the comment, linuxD asks:
Why for sin() in <math.h>, do we need -lm...
XPath to select multiple tags
...e case -- in general people do care about the differences between: kitchen:table and sql:table, or between architecture:column, sql:column, array:column, military:column
– Dimitre Novatchev
Aug 1 '18 at 16:14
...
What's a correct and good way to implement __hash__()?
...nswer below mentions, hash method should not be defined/overridden for a mutable object (defined by default and uses id for equality and comparison).
– Mr Matrix
Jan 5 at 20:14
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DateTime2 vs DateTime in SQL Server
...or new
work. These types align with the SQL
Standard. They are more portable.
time, datetime2 and datetimeoffset
provide more seconds precision.
datetimeoffset provides time zone
support for globally deployed
applications.
datetime2 has larger date range, a larger default fractional ...
How to list all methods for an object in Ruby?
..._of", "execute_simple_calculation", "attr_protected",
"reflections", "table_name_prefix", ...
Note that methods is a method for Classes and for Class instances.
Here's the methods that my User class has that are not in the ActiveRecord base class:
>> User.methods - ActiveRecord::Base...
Is there any difference between the `:key => “value”` and `key: “value”` hash notations?
...strings. Although hash-rockets provide freedom and functionality for hash-tables, specifically allowing strings as keys, application performance may be slower than if the hash-tables were to be constructed with symbols as hash-keys. The following resources may be able to clarify any differences be...
SQL : BETWEEN vs =
...r a range. This is especially true if you have similar field names in your table.
If, say, our table has both a transactiondate and a transitiondate, if I read
transactiondate between ...
I know immediately that both ends of the test are against this one field.
If I read
transactiondate>='2...
iOS 6 apps - how to deal with iPhone 5 screen size? [duplicate]
...th | UIViewAutoresizingFlexibleHeight;
It works great out of the box for table views, however, if your app used pixel-perfect layout for displaying content, then your best bet would be to re-imagine the content so that it can accommodate varying heights.
If that's not a possibility, then the only...
How to deploy an ASP.NET Application with zero downtime
...two-phase changes to schema. One example -- many of the ORMs barf if the table definition differs from the definition as it understand it (new or missing columns).
– EBarr
Dec 19 '13 at 18:43
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