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PHP mail function doesn't complete sending of e-mail
...g is enabled and set to report all errors
Error reporting is essential to rooting out bugs in your code and general errors that PHP encounters. Error reporting needs to be enabled to receive these errors. Placing the following code at the top of your PHP files (or in a master configuration file) wi...
String concatenation does not work in SQLite
... ||
Oracle CONCAT(string1, string2) or ||
MySQL CONCAT(string1, string2, string3...) or || if PIPES_AS_CONCAT enabled
Postgres CONCAT(string1, string2, string3...) or ||
Microsoft SQL Server 2012+ CONCAT(string1, string2, str...
When is the @JsonProperty property used and what is it used for?
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Does the Class name should be same as the root element of JSON. This is not working for me.
– Pavan
Aug 2 '17 at 11:15
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Can someone explain in simple terms to me what a directed acyclic graph is?
... Andriyev, +1 for the deadlock example. This is in fact used by MySQL's InnoDB engine, and they call it a "wait-for-graph", as in, "that row has to wait for the lock on that row to be released"
– Roland Bouman
Feb 17 '10 at 19:40
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Anatomy of a “Memory Leak”
...book.
Basically, in .NET a memory leak occurs when referenced objects are rooted and thus cannot be garbage collected. This occurs accidentally when you hold on to references beyond the intended scope.
You'll know that you have leaks when you start getting OutOfMemoryExceptions or your memory usag...
Properties file in python (similar to Java Properties)
...gFile.properties
[DatabaseSection]
database.dbname=unitTest
database.user=root
database.password=
For more functionality, read: https://docs.python.org/2/library/configparser.html
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PHP: How to generate a random, unique, alphanumeric string for use in a secret link?
...his 5-day long automated test and stored the generated unique strings in a MySQL database.
During this test period, I used 5 different lengths (5, 10, 15, 20, 50) and +/-0.5 million records were inserted for each length. During my test, only the length 5 generated +/-3K duplicates out of 0.5 million...
How to do an update + join in PostgreSQL?
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coming from mysql it's unintuitive that the same join used for select won't also update just by adding a set phrase :( still - the syntax for this is probably easier for a newcomer to sql to master.
– WEBjuju
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In Docker, what's the difference between a container and an image? [duplicate]
...o give us an interactive bash shell.
$ docker run -i -t ubuntu /bin/bash
root@48cff2e9be75:/# ls
bin boot dev etc home lib lib64 media mnt opt proc root run sbin srv sys tmp usr var
root@48cff2e9be75:/# cat > foo
This is a really important file!!!!
root@48cff2e9be75:/# exit
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How do I move a redis database from one server to another?
...ew cloud instance and use that instance as my new redis server. If it were MySQL, I would export the DB from the old server and import it into the new server. How should I do this with redis?
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