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Common MySQL fields and their appropriate data types
... |
| salt | CHAR(x) | randomly generated string, usually of
fixed length (x)
| digest (md5) | CHAR(32) | |
| phone number | VAR...
Rails: Adding an index after adding column
...g technique may be helpful:
rails generate migration AddIndexToUsers name:string:index will generate the following migration:
class AddIndexToUsers < ActiveRecord::Migration
def change
add_column :users, :name, :string
add_index :users, :name
end
end
Delete add_column line and run...
Spring DAO vs Spring ORM vs Spring JDBC
...rst, last from person where id=?",
rs -> new Person(rs.getString(1), rs.getString(2)),
134561351656L);
Spring-JDBC also provides a JdbcDaoSupport, that you can extend to develop your DAO. It basically defines 2 properties: a DataSource and a JdbcTemplate that both ca...
What is a Maven artifact?
...n name, like com.example.foo), an artifact ID (just a name), and a version string. The three together uniquely identify the artifact.
A project's dependencies are specified as artifacts.
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Initializing IEnumerable In C#
...adding to the answers stated you might be also looking for
IEnumerable<string> m_oEnum = Enumerable.Empty<string>();
or
IEnumerable<string> m_oEnum = new string[]{};
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i...
Constructors in JavaScript objects
... this.set_name = function (value) {
if (typeof value != 'string')
throw 'Name must be a string';
if (value.length < 2 || value.length > 20)
throw 'Name must be 2-20 characters long.';
name = value;
};
};
...
json.dumps vs flask.jsonify
...understand the purpose of the flask.jsonify method. I try to make a JSON string from this:
5 Answers
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Android: Coloring part of a string using TextView.setText()?
...
Use spans.
Example:
final SpannableStringBuilder sb = new SpannableStringBuilder("your text here");
// Span to set text color to some RGB value
final ForegroundColorSpan fcs = new ForegroundColorSpan(Color.rgb(158, 158, 158));
// Span to make text bold
fina...
How to remove padding around buttons in Android?
...id:insetTop="0dp"
android:insetBottom="0dp"
android:text="@string/view_video"
android:textColor="@color/white"/>
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Escaping keyword-like column names in Postgres
...ml#delimited%20identifier
This is the code to quote the identifier:
static String delimited_identifier (String identifier)
{
return "\"" + identifier.replaceAll ("\"", "\"\"") + "\"";
}
And this is the code to build the insert:
static String build_insert (String table, String[] columns)
{
Strin...