Result class Null safety Query
A single row in a ResultSet.
The name of a column is determined by the first applicable rule of the following rules:
- The alias name of an aliased column.
- The last component of a property expression. Functions for example, are not property expressions.
- A generated key of the format
$1
,$2
,$3
, ... The number after$
corresponds to the position of the column among the rest of the unnamed columns and starts at1
.
- Implemented types
- Available Extensions
Constructors
- Result()
Properties
- first → String
-
Returns the first element. [...]
read-only, inherited
- hashCode → int
-
The hash code for this object. [...]
read-only, inherited
- isEmpty → bool
-
Returns
true
if there are no elements in this collection. [...]read-only, inherited - isNotEmpty → bool
-
Returns true if there is at least one element in this collection. [...]
read-only, inherited
-
iterator
→ Iterator<
String> -
Returns a new
Iterator
that allows iterating the elements of thisIterable
. [...]read-only, inherited -
keys
→ List<
String> -
The names of the columns in this result.
read-only, override
- last → String
-
Returns the last element. [...]
read-only, inherited
- length → int
-
The number of column in this result.
read-only, override
- runtimeType → Type
-
A representation of the runtime type of the object.
read-only, inherited
- single → String
-
Checks that this iterable has only one element, and returns that element. [...]
read-only, inherited
Methods
-
any(
bool test(String element)) → bool -
Checks whether any element of this iterable satisfies
test
. [...]inherited -
array(
Object nameOrIndex) → Array? -
Returns the column at the given
nameOrIndex
as an Array. [...]override -
blob(
Object nameOrIndex) → Blob? -
Returns the column at the given
nameOrIndex
as a Blob. [...]override -
boolean(
Object nameOrIndex) → bool -
Returns the column at the given
nameOrIndex
as a bool. [...]override -
cast<
R> () → Iterable< R> -
Provides a view of this iterable as an iterable of
R
instances. [...]inherited -
contains(
Object? nameOrIndex) → bool -
Returns whether a column with the given
nameOrIndex
exists in this result.override -
date(
Object nameOrIndex) → DateTime? -
Returns the column at the given
nameOrIndex
as a DateTime. [...]override -
dictionary(
Object nameOrIndex) → Dictionary? -
Returns the column at the given
nameOrIndex
as a Dictionary. [...]override -
elementAt(
int index) → String -
Returns the
index
th element. [...]inherited -
every(
bool test(String element)) → bool -
Checks whether every element of this iterable satisfies
test
. [...]inherited -
expand<
T> (Iterable< T> toElements(String element)) → Iterable<T> -
Expands each element of this Iterable into zero or more elements. [...]
inherited
-
firstWhere(
bool test(String element), {String orElse()?}) → String -
Returns the first element that satisfies the given predicate
test
. [...]inherited -
float(
Object nameOrIndex) → double -
Returns the column at the given
nameOrIndex
as an floating point number. [...]override -
fold<
T> (T initialValue, T combine(T previousValue, String element)) → T -
Reduces a collection to a single value by iteratively combining each
element of the collection with an existing value [...]
inherited
-
followedBy(
Iterable< String> other) → Iterable<String> -
Returns the lazy concatenation of this iterable and
other
. [...]inherited -
forEach(
void action(String element)) → void -
Invokes
action
on each element of this iterable in iteration order.inherited -
integer(
Object nameOrIndex) → int -
Returns the column at the given
nameOrIndex
as an integer number. [...]override -
join(
[String separator = ""]) → String -
Converts each element to a String and concatenates the strings. [...]
inherited
-
lastWhere(
bool test(String element), {String orElse()?}) → String -
Returns the last element that satisfies the given predicate
test
. [...]inherited -
map<
T> (T toElement(String e)) → Iterable< T> -
The current elements of this iterable modified by
toElement
. [...]inherited -
noSuchMethod(
Invocation invocation) → dynamic -
Invoked when a non-existent method or property is accessed. [...]
inherited
-
number(
Object nameOrIndex) → num? -
Returns the column at the given
nameOrIndex
as a num. [...]override -
reduce(
String combine(String value, String element)) → String -
Reduces a collection to a single value by iteratively combining elements
of the collection using the provided function. [...]
inherited
-
singleWhere(
bool test(String element), {String orElse()?}) → String -
Returns the single element that satisfies
test
. [...]inherited -
skip(
int count) → Iterable< String> -
Returns an Iterable that provides all but the first
count
elements. [...]inherited -
skipWhile(
bool test(String value)) → Iterable< String> -
Returns an
Iterable
that skips leading elements whiletest
is satisfied. [...]inherited -
string(
Object nameOrIndex) → String? -
Returns the column at the given
nameOrIndex
as a String. [...]override -
take(
int count) → Iterable< String> -
Returns a lazy iterable of the
count
first elements of this iterable. [...]inherited -
takeWhile(
bool test(String value)) → Iterable< String> -
Returns a lazy iterable of the leading elements satisfying
test
. [...]inherited -
toJson(
) → String - Returns a JSON string which contains a dictionary of the named columns of this result.
-
toList(
{bool growable = true}) → List< String> -
Creates a List containing the elements of this Iterable. [...]
inherited
-
toPlainList(
) → List< Object?> -
Deeply converts this array into a representation of plain Dart objects
and returns it. [...]
inherited
-
toPlainMap(
) → Map< String, Object?> -
Deeply converts this dictionary into a representation of plain Dart
objects and returns it. [...]
inherited
-
toSet(
) → Set< String> -
Creates a Set containing the same elements as this iterable. [...]
inherited
-
toString(
) → String -
A string representation of this object. [...]
inherited
-
value<
T extends Object> (Object nameOrIndex) → T? -
Returns the column at the given
nameOrIndex
. [...]override -
where(
bool test(String element)) → Iterable< String> -
Returns a new lazy Iterable with all elements that satisfy the
predicate
test
. [...]inherited -
whereType<
T> () → Iterable< T> -
Returns a new lazy Iterable with all elements that have type
T
. [...]inherited
Operators
-
operator ==(
Object other) → bool -
The equality operator. [...]
inherited
-
operator [](
Object nameOrIndex) → Fragment -
Returns a Fragment for the column at the given
nameOrIndex
.override