Yesterday, someone pointed me at A Lisp interpreter in C# 7. LISP is
the third programming languages that I used, after Algol 60 and Fortran.
C#
is a programming language that I just recently started to use. A long time
ago, I made some attempts to program a LISP interpreter in Fortran. Having a
lot of programming experience, I thought it would be easy to implement a LISP
interpreter in C#, especially, because C# is a garbage collected language
itself and in some sense rather close to LISP. I also got the idea to present
the implementation is a didactic presentation with comments explaining the
code in step-by-step manner. I have created the
LISP interpreter in C#
repository for this purpose.
I went to the exhibitionB93 Nu, which
was kind of a new year reception, with works from the various artists of the
B93 artist collective. I was surprised by the
quality of the works on display.I did like the work with the text "bobbinhood"
and the words 'be' and 'somebody' in it. I also had a look at the book
Saintscape by Claudio
Beorchia, which was on display. I saw that the book has an ISBN, which
might indicate that there is more than one copy of it. In that case, I would
be interested to buy a copy.
I went to the opening of the exhibitionThe
Swarm by Anne de boer at
TETEM art space. I arrived a little late and
missed the start of the tour. I was not very impressed by the exhibition and
the tour.
At 16:52, I bought the following two auction catalogues published by Christies
from thrift store Het Goed:
Post-War and Comtemporary Art: Tuesday 1 December 2009
Modern and Contemporary Art: 8 December 1993.
In the evening, I went to bookshop Broekhuis
for their pre-sale evening for 'friends' of the bookshop. I took almost an hour
to look around, but could not make my mind up about buying a book.
Next, I went to PlanetArt, where there was a kind of new years party for all
the people who volunteerd for GOGBOT. I
arrive around the time of the new moon, which was accompanied with
the first, albeit penumbral, lunar eclipse of 2020, which was at maxium
at 19:09:59 UTC. I forgot to look up in the sky to see if I could see the moon.
I sat downstairs with some tea. Upstairs there was music. Several times, I
opened the door for some guests and talked a bit with some. One of them I saw
for the third time in three days. I had a good time working on
RawParser. I stayed for
about two hours.
This year, there will be a lot of special dates.
Today is a double date for the notation: DD-MM-YY: 12-01-20. The other special
dates of this year are:
February 2: Palindrome date (02/02/2020, 2020.02.02, or 02-02-2020)
At 16:57, I bought the book Charlotte van Pallandt: gipsen en schetsen
written by Charlotte van Pallandt and Gerdien Verschoor, written in Dutch and
published by Hannema-De Stuers Fundatie in 2001,
ISBN:9789070842420, from thrift store Het Goed
for € 3.50.
I finished reading the novel JPod by Douglas
Coupland, which I started reading on November 27 after I bought it on
November 14 last year. I bought the book, because
it looked interesting with respect to being a kind of epistolary novel with many fragments take from online communications and
pages filled with semi-random words and numbers, such as prime numbers and the
digits of pi. I did like the novel. I tried to find out if people already
solved the many puzzles in the book, such as which non-prime number is
inserted in the sequence of prime numbers. The only solution that I found, was
in the Master thesis Puzzling translation: Breaking the code by Jonna Verdel, where on page 26
it mentions that the inserted three letter word is EMF.
Models: Attract Women Through Honesty written by Mark Manson in
English and published by Createspace Independent Pub in 2011,
ISBN:9781463750350, for € 2.70.
This morning, I went to Kunstmuseum in The Hague to see the
exhibitionMonet: The Garden
Paintings. (If I remember correctly, the previous time, I visited this
museum was on March 31, 1977.) There, I saw the following works:
White Clematis, 1887.
In the Norwegian Boat, circa 1887
The Studio Boat, 1877
Fishing Nets at Pourville, 1882
Rounded Flower Bed, 1876
Haystacks: Snow Effect, 1891
Water Lilies, circa 1814-1917
The Water-Lily Pond, 1889
Water Lilies, 1908
Water Lilies, 1907
Pink Water Lilies, 1897-1899
Water Lilies, 1907
Water Lilies, 1914-1917
Water Lilies, 1916-1919
Water Lilies, 1916-1919
Water Lilies, 1916-1919
The Japanese Bridge, 1918-1924
The Japanese Bridge, 1918-1924
The Footbridge over the Water-Lily Pond, 1919
Irises, circa 1914-1917
The Waterlily-Pond, 1917-1919
Weeping Willow, 1918-1919
House among the Roses, 1925
The House at Givery, seen from the Rose Garden, 1922-1924
Water Lilies, Reflection of Weeping Willows, 1916-1919
Water Lilies, 1917-1919
The Path under the Rose Arches, 1920-1922
Weeping Willow, 1921-1922
The Garden at Givery, 1922-1926
The Artist's House, seen from the Rose Garden, 1922-1924
Yellow Frises, 1924-1925
Wisteria (Study), 1917-1920
Wisteria, 1919-1920
Wisteria, 1917-1920
Wisteria, 1919-1920
Quai du Louvre, 1867
Roses, 1925-1926
Hemerocallis (Daylilies), 1914-1917
Water Lilies and Agapanthus, 1914-1917
Water Lilies, 1916-1919, pencil on paper
Water Lilies, 1916-1919, pencil on paper
Reflections of Weeping Willows, 1916-1919
Next, I saw the exhibition about Jeroen Eisinga - The Social Ladder. Several of his films were shown
and 'camera' from "The Most Important Moment in My Life" (1995) was on display.
After this I went to Chambers of Wonder in the basement, in a certain way the most interesting
part of the museum. There I saw the following works:
Paul Blanca, Crying (Nora Kimball), 1985
Ulay, Woman in bath, 1970-1993
Leo Gestel, Recumbent Nude, Seen from the Rear, circa 1909-1910
Frederick Linck, Nice boys, 1978
Aysel Bodur, Untitled, 1992
Wally Elenbaas, Untitled, undated
Ellen Mandenmaker, Untitled, circa 1996
Ferdinand Hart Nibbing, In the Geul Valley, circa 1904
Edgar Fernhout, Zee, 1957
Next, I saw the exhibition Barbara Nanning with works by her. Followed by this, I saw the exhibition Mondrian & De Stijl. I liked the following works, where if no name
is mentioned, are by Piet Mondrian:
Oostzijdse Mill, 1906-1907
Woman in Farmyard, circa 1898-1999
View of the Schinkelbuurt, circa 1895
Irrigation Ditch with Two Willows, circa 1900-1902
Landzicht Farm, (oil study), circa 1905
Cows in the Meadow, 1905
Flowering Apple Tree, 1912
Theo van Doesburg: Composition XVII, 1919
Zeeland Farmer, 1909
The Red Cloud, 1907
Landscape at Evening, 1908
Haystack, circa 1907
Evening on the Gein, 1906
Dredge, 1907
Trees on the Gein, 1907
Fern near Saasveld, 1907
Oostzijdse Mill in Moonlight, circa 1907
Mill at Domburg, 1908
Evolution, 1911
House in Sunlight, 1909
Evening; The Red Tree, 1908-1910
Aäronskelken (Arum lilies), 1910
Junes near Domburg, 1910
Dune Landscape, 1911
Seascape, 1909
Sea after sunset, 1909
Composition with Red, Blue, Black, Yellow and Grey, 1921
Victory Boogie Woogie, 1942-1944
Lozenge composition with Yellow Lines, 1933
Theo van Doesburg, Three stained glass windows for doorways in the spangen
quarter, Rotterdam, 1919
Composition No.3 with colour planes, 1917
Composition with Grid 9: checkerboard composition with bright colour, 1919
Composition with Grid 3: Lozenge Composition, 1918
Composition with Red, Yellow, Black, Blue and Grey, 1921
Vilmos Huszár, Composition in Grey, 1918
Haystack behind a farm, circa 1902-04
A farm shed behind a fenze, circa 1902-04
Ditch near the farm landzigt, circa 1900 (drawing)
The last exhibition that I saw was Discover the modern. I found the following works worth mentioning:
Leo Gestel, Autumn tree, 1911
Jan Toorop, Labour (the woodcutter), 1905
Vincent van Gogh, Garden at aries, 1888
Paul Signac, Cassis. rap lombord, opus 196, 1889
Maximilien Luce, View of the river Schelde, 1894
Edgar Degas, Nude study for the little dancer, circa 1878
George Hendrik Breitner, Het rokin, circa 1890
Pablo Picasso, Harlequin, 1913
Charley Toorop, Self-portrait (standing with palette) 1932-1933
I visited the shop of the museum, but did not buy anything.
After this, I visited a number of bookshops in The Hague and Utrecht. In
The Hague, I visited: Van Stockum, The American Book Center, and
Paagman. In Utrecht I visited Steven Sterk
and Broese. At 18:22, I bought the book
Het verborgen brein written by John Bargh, translated from the English
Before You Know It to Dutch by Marianne Palm, Aad Janssen, and Nicole
Seegers, published by Overamstel Uitgevers in 2018, ISBN:9789048827121, from Steven Sterk for € 7.90.
I finished reading the novel
The Long Way to a Small, Angry Planet by by Becky Chambers after I started
reading it last Thursday, the day I bought the book. It is
a long time ago that I read a book in a single go. Yesterday, I had a copy of
the second part in my hand when at the American Book Center, but decided to
first finish the book, before buying it. The book feels a little like a sitcom,
because many of the chapters can be read as a separate story and the order of
some of the chapters could be rearranged without hurting the story. (I guess,
it would aid making a TV show based on the book.) I have admit that it touched
on some interesting philosophical, psychological and social issues.
One way of calculating the volume of a hexahedron is to divide it into six (or five) tetrahedron for which there is a 'simple' formulea to calculate the
volume. Another method consists of calculating the volume is to divide each
side in two triangles and calculate the volume of the tetrahedron made of the
triangle and an arbitrary point (usually the origin). This works as long as
the sides are flat. But when the four points of a side do not lay in a plane,
there are two ways to divide it into triangles, which result in a different
volume. So, the volumne is not really defined in this case. One approximation
is to take the average of the two ways. This can be done by adding half of the
volume of the tetrahedron between the four corner points. If the four points
are in a plane, the volume of this tetrahedron is zero. I have no idea if this
approximation is the same as defining the volume when taking the curved surface
between the four edges that is made out of straight lines connecting the edges
at 'equivalent' distances, kind of simular to
the
hyperbolic paraboloid.
Today is the first day of the year of the rat according to the Chinese
calendar. The spring festival has begun. I wish everyone, and especially all
people in China, a very healthy New Year in view of Wuhan coronavirus outbreak. (The genome of the Wuhan-Hu-1 virus just
encodes for ten genes, producing ten different proteins. One of the ten gene takes up almost twothirds of the genome. It
would not surprise me if this is the gene for the 'evil' protein, which allows
the virus to enter the human cells and gets itself replicated by those cells.)
The previous weather record for the maximum temperature at Airport Twente for
this date, was 12.1°C in 1990. In the evening, between eight and nine, a
temperature of 12.3°C was recorded. It would not surprise me if the lowest
temperature of 9.4°C is also a record. During this time of the year, the
average maximum temperature is 5.2°C. I have not seen any snow yet, not
even wet snow. Some snow did fall in the North and South of the country. We
also did have no serious freezing periods.
This months interesting links
