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Rank function in MySQL
... SET command.
Test case:
CREATE TABLE person (id int, first_name varchar(20), age int, gender char(1));
INSERT INTO person VALUES (1, 'Bob', 25, 'M');
INSERT INTO person VALUES (2, 'Jane', 20, 'F');
INSERT INTO person VALUES (3, 'Jack', 30, 'M');
INSERT INTO person VALUES (4, 'Bill', 32, 'M');
IN...
URL encoding the space character: + or %20?
When is a space in a URL encoded to + , and when is it encoded to %20 ?
4 Answers
4
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Create a pointer to two-dimensional array
...na make a pointer to the first element of the array
uint8_t (*matrix_ptr)[20] = l_matrix;
With typedef, this looks cleaner
typedef uint8_t array_of_20_uint8_t[20];
array_of_20_uint8_t *matrix_ptr = l_matrix;
Then you can enjoy life again :)
matrix_ptr[0][1] = ...;
Beware of the pointer/arra...
How do I set a variable to the output of a command in Bash?
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20
White space (or lack of whitespace) matters
– Ali
Apr 24 '14 at 10:40
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Programmatically Lighten or Darken a hex color (or rgb, and blend colors)
... amount to lighten or darken. To darken, pass in a negative number (i.e. -20 ).
16 Answers
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Convert integer into byte array (Java)
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answered Dec 20 '09 at 20:15
Gregory PakoszGregory Pakosz
63.8k1616 gold badges130130 silver badges161161 bronze badges
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What does “while True” mean in Python?
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edited Sep 20 '10 at 19:14
answered Sep 20 '10 at 19:07
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how get yesterday and tomorrow datetime in c#
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answered Nov 20 '11 at 19:08
TabrezTabrez
2,92233 gold badges2323 silver badges3232 bronze badges
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How do 20 questions AI algorithms work?
Simple online games of 20 questions powered by an eerily accurate AI.
5 Answers
5
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How do I prompt for Yes/No/Cancel input in a Linux shell script?
...or example, using whiptail:
if whiptail --yesno "Is this a good question" 20 60 ;then
echo Yes
else
echo No
fi
Depending on your system, you may need to replace whiptail with another similiar tool:
dialog --yesno "Is this a good question" 20 60 && echo Yes
gdialog --yesno "Is th...