# D - [Damm algorithm](/perl6-rosettacode/programming_tasks/d/damm_algorithm.md) - [Data Encryption Standard](/perl6-rosettacode/programming_tasks/d/data_encryption_standard.md) - [Date format](/perl6-rosettacode/programming_tasks/d/date_format.md) - [Date manipulation](/perl6-rosettacode/programming_tasks/d/date_manipulation.md) - [Dating agency](/perl6-rosettacode/programming_tasks/d/dating_agency.md) - [Day of the week](/perl6-rosettacode/programming_tasks/d/day_of_the_week.md) - [Day of the week of Christmas and New Year](/perl6-rosettacode/programming_tasks/d/day_of_the_week_of_christmas_and_new_year.md) - [Days between dates](/perl6-rosettacode/programming_tasks/d/days_between_dates.md) - [De Bruijn sequences](/perl6-rosettacode/programming_tasks/d/de_bruijn_sequences.md) - [De Polignac numbers](/perl6-rosettacode/programming_tasks/d/de_polignac_numbers.md) - [Deal cards for FreeCell](/perl6-rosettacode/programming_tasks/d/deal_cards_for_freecell.md) - [Death Star](/perl6-rosettacode/programming_tasks/d/death_star.md) - [Deceptive numbers](/perl6-rosettacode/programming_tasks/d/deceptive_numbers.md) - [Decimal floating point number to binary](/perl6-rosettacode/programming_tasks/d/decimal_floating_point_number_to_binary.md) - [Decision tables](/perl6-rosettacode/programming_tasks/d/decision_tables.md) - [Deconvolution](/perl6-rosettacode/programming_tasks/d/deconvolution.md) - [1D](/perl6-rosettacode/programming_tasks/d/deconvolution/1d.md) - [2D](/perl6-rosettacode/programming_tasks/d/deconvolution/2d.md) - [Decorate-sort-undecorate idiom](/perl6-rosettacode/programming_tasks/d/decorate-sort-undecorate_idiom.md) - [Deepcopy](/perl6-rosettacode/programming_tasks/d/deepcopy.md) - [Define a primitive data type](/perl6-rosettacode/programming_tasks/d/define_a_primitive_data_type.md) - [Delegates](/perl6-rosettacode/programming_tasks/d/delegates.md) - [Delete a file](/perl6-rosettacode/programming_tasks/d/delete_a_file.md) - [Deming's funnel](/perl6-rosettacode/programming_tasks/d/demings_funnel.md) - [Department numbers](/perl6-rosettacode/programming_tasks/d/department_numbers.md) - [Descending primes](/perl6-rosettacode/programming_tasks/d/descending_primes.md) - [Detect division by zero](/perl6-rosettacode/programming_tasks/d/detect_division_by_zero.md) - [Determinant and permanent](/perl6-rosettacode/programming_tasks/d/determinant_and_permanent.md) - [Determine if a string has all the same characters](/perl6-rosettacode/programming_tasks/d/determine_if_a_string_has_all_the_same_characters.md) - [Determine if a string has all unique characters](/perl6-rosettacode/programming_tasks/d/determine_if_a_string_has_all_unique_characters.md) - [Determine if a string is collapsible](/perl6-rosettacode/programming_tasks/d/determine_if_a_string_is_collapsible.md) - [Determine if a string is numeric](/perl6-rosettacode/programming_tasks/d/determine_if_a_string_is_numeric.md) - [Determine if a string is squeezable](/perl6-rosettacode/programming_tasks/d/determine_if_a_string_is_squeezable.md) - [Determine if only one instance is running](/perl6-rosettacode/programming_tasks/d/determine_if_only_one_instance_is_running.md) - [Determine if two triangles overlap](/perl6-rosettacode/programming_tasks/d/determine_if_two_triangles_overlap.md) - [Determine sentence type](/perl6-rosettacode/programming_tasks/d/determine_sentence_type.md) - [Dice game probabilities](/perl6-rosettacode/programming_tasks/d/dice_game_probabilities.md) - [Digit fifth powers](/perl6-rosettacode/programming_tasks/d/digit_fifth_powers.md) - [Digital root](/perl6-rosettacode/programming_tasks/d/digital_root.md) - [Multiplicative digital root](/perl6-rosettacode/programming_tasks/d/digital_root/multiplicative_digital_root.md) - [Dijkstra's algorithm](/perl6-rosettacode/programming_tasks/d/dijkstras_algorithm.md) - [Dinesman's multiple-dwelling problem](/perl6-rosettacode/programming_tasks/d/dinesmans_multiple-dwelling_problem.md) - [Dining philosophers](/perl6-rosettacode/programming_tasks/d/dining_philosophers.md) - [Disarium numbers](/perl6-rosettacode/programming_tasks/d/disarium_numbers.md) - [Discordian date](/perl6-rosettacode/programming_tasks/d/discordian_date.md) - [Discrete Fourier transform](/perl6-rosettacode/programming_tasks/d/discrete_fourier_transform.md) - [Display a linear combination](/perl6-rosettacode/programming_tasks/d/display_a_linear_combination.md) - [Display an outline as a nested table](/perl6-rosettacode/programming_tasks/d/display_an_outline_as_a_nested_table.md) - [Distance and Bearing](/perl6-rosettacode/programming_tasks/d/distance_and_bearing.md) - [Distinct palindromes within decimal numbers](/perl6-rosettacode/programming_tasks/d/distinct_palindromes_within_decimal_numbers.md) - [Distinct power numbers](/perl6-rosettacode/programming_tasks/d/distinct_power_numbers.md) - [Distributed programming](/perl6-rosettacode/programming_tasks/d/distributed_programming.md) - [Distribution of 0 digits in factorial series](/perl6-rosettacode/programming_tasks/d/distribution_of_0_digits_in_factorial_series.md) - [Diversity prediction theorem](/perl6-rosettacode/programming_tasks/d/diversity_prediction_theorem.md) - [Divide a rectangle into a number of unequal triangles](/perl6-rosettacode/programming_tasks/d/divide_a_rectangle_into_a_number_of_unequal_triangles.md) - [DNS query](/perl6-rosettacode/programming_tasks/d/dns_query.md) - [Documentation](/perl6-rosettacode/programming_tasks/d/documentation.md) - [Doomsday rule](/perl6-rosettacode/programming_tasks/d/doomsday_rule.md) - [Dot product](/perl6-rosettacode/programming_tasks/d/dot_product.md) - [Double Twin Primes](/perl6-rosettacode/programming_tasks/d/double_twin_primes.md) - [Doubly-linked list](/perl6-rosettacode/programming_tasks/d/doubly-linked-list.md) - [Definition](/perl6-rosettacode/programming_tasks/d/doubly-linked-list/definition.md) - [Element definition](/perl6-rosettacode/programming_tasks/d/doubly-linked-list/element_definition.md) - [Element insertion](/perl6-rosettacode/programming_tasks/d/doubly-linked-list/element_insertion.md) - [Element removal](/perl6-rosettacode/programming_tasks/d/doubly-linked-list/element_removal.md) - [Traversal](/perl6-rosettacode/programming_tasks/d/doubly-linked-list/traversal.md) - [Dragon curve](/perl6-rosettacode/programming_tasks/d/dragon_curve.md) - [Draw a clock](/perl6-rosettacode/programming_tasks/d/draw_a_clock.md) - [Draw a cuboid](/perl6-rosettacode/programming_tasks/d/draw_a_cuboid.md) - [Draw a pixel](/perl6-rosettacode/programming_tasks/d/draw_a_pixel.md) - [Draw a rotating cube](/perl6-rosettacode/programming_tasks/d/draw_a_rotating_cube.md) - [Draw a sphere](/perl6-rosettacode/programming_tasks/d/draw_a_sphere.md) - [Draw pixel 2](/perl6-rosettacode/programming_tasks/d/draw_pixel_2.md) - [Duffinian numbers](/perl6-rosettacode/programming_tasks/d/duffinian_numbers.md) - [Dutch national flag problem](/perl6-rosettacode/programming_tasks/d/dutch_national_flag_problem.md) - [Dynamic variable names](/perl6-rosettacode/programming_tasks/d/dynamic_variable_names.md)