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Why does Dijkstra's algorithm use decrease-key?
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Adding 'serial' to existing column in Postgres
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Look at the following commands (especially the commented block).
DROP TABLE foo;
DROP TABLE bar;
CREATE TABLE foo (a int, b text);
CREATE TABLE bar (a serial, b text);
INSERT INTO foo (a, b) SELECT i, 'foo ' || i::text FROM generate_series(1, 5...
Find XOR of all numbers in a given range
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Why do we use Base64?
...nd why Base64 was necessary in the first place we need a little history of computing.
Computers communicate in binary - 0s and 1s - but people typically want to communicate with more rich forms data such as text or images. In order to transfer this data between computers it first has to be encode...
Rename MySQL database [duplicate]
...tup replication from this database to the new one.
If you want to see the commands to do this, @jan has the details.
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Convert all first letter to upper case, rest lower for each word
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Also note the comments about ALL UPPERCASE strings: msdn.microsoft.com/en-us/library/…
– Michael Stum♦
Dec 21 '09 at 23:46
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How to connect to Mysql Server inside VirtualBox Vagrant?
...nnect to the mysql server, it`s resposts with the error:
'reading initial communication packet'
7 Answers
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Where does Java's String constant pool live, the heap or the stack?
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stackoverflow.com/questions/28107739/…
– Kanagavelu Sugumar
Feb 23 at 15:13
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using gitignore to ignore (but not delete) files
...ad of .gitignore, you can update local git repository by running following command:
git update-index --assume-unchanged <file>
In this case a file is being tracked in the origin repo. You can modify it in your local repo and git will never mark it as changed. Read more at:
http://blog.pag...
Python - write() versus writelines() and concatenated strings
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@hBy2Py: exactly the opposite: stackoverflow.com/a/6165711/281545
– Mr_and_Mrs_D
Mar 11 '17 at 15:11
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