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Difference between DTO, VO, POJO, JavaBeans?
...eans are reusable software components for Java that can be manipulated visually in a builder tool. Practically, they are classes written in the Java programming language conforming to a particular convention. They are used to encapsulate many objects into a single object (the bean), so that they can...
sqlalchemy unique across multiple columns
... declares those in the table definition, or if using declarative as in the __table_args__:
# version1: table definition
mytable = Table('mytable', meta,
# ...
Column('customer_id', Integer, ForeignKey('customers.customer_id')),
Column('location_code', Unicode(10)),
UniqueConstraint...
ActiveModel::ForbiddenAttributesError when creating new user
...mit(:what, :ever)
end
Update:
Here's a continuation project for CanCan called CanCanCan, which looks promising:
CanCanCan
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Unignore subdirectories of ignored directories in Git
...
I have a global gitignore file where I ignored all *.zip file. Yet for a particular project, I want to include zip files. I added this line to that project's .gitignore and it works great!: !*.zip
– Jinghao Shi
Mar 21 '15 at 3:44
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How to scroll to bottom in a ScrollView on activity startup
...playing some data in a ScrollView. On activity startup (method onCreate) I fill the ScrollView with data and want to scroll to the bottom.
...
为什么编译好的libcurl静态lib用不了？ - C/C++ - 清泛网 - 专注C/C++及内核技术
...an application that uses the static libcurl library, you must
add -DCURL_STATICLIB to your CFLAGS. Otherwise the linker will look for
dynamic import symbols. If you get linker error like "unknown symbol
__imp__curl_easy_init ..." you have linked against the wrong (static)
library. If you...
“Variable” variables in Javascript?
...usly consider that). It is possible to access some global variables dynamically via window, but that doesn't work for variables local to a function. Global variables that do not become a property of window are variables defined with let and const, and classes.
There is almost always a better soluti...
git status shows modifications, git checkout — doesn't remove them
I would like to remove all changes to my working copy.
Running git status shows files modified.
Nothing I do seems to remove these modifications.
E.g.:
...
Get generic type of class at runtime
...ned, it's only possible via reflection in certain circumstances.
If you really need the type, this is the usual (type-safe) workaround pattern:
public class GenericClass<T> {
private final Class<T> type;
public GenericClass(Class<T> type) {
this.type = type;...
ImportError: No module named apiclient.discovery
...
You should be able to get these dependencies with this simple install:
sudo pip install --upgrade google-api-python-client
This is described on the quick start page for python.
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