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Regular expression to match DNS hostname or IP Address?
...check separately that the total length of the hostname must not exceed 255 characters. For more information, please consult RFC-952 and RFC-1123.
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How can I tell when a MySQL table was last updated?
...e information_schema database to tell you when another table was updated:
SELECT UPDATE_TIME
FROM information_schema.tables
WHERE TABLE_SCHEMA = 'dbname'
AND TABLE_NAME = 'tabname'
This does of course mean opening a connection to the database.
An alternative option would be to "touch" a ...
Coding in Other (Spoken) Languages
... @Jonik: At least you didn't have to argue about ASCII/extended charset. In some places (here), there used to be a large debate on naming your identifiers a) in English, b) in Czech without accents, c) in Czech with the accents (most of which you can't type without Czech keyboard layout, ...
How to import existing Android project into Eclipse?
... import and existing Android project into my current Eclipse workspace. I select File->New->Android Project, which brings up the Android project dialog, I then select, "Create project from existing source", Location, Build Target and Finish.
...
Switching between GCC and Clang/LLVM using CMake
...sudo update-alternatives --config c++
Will print something like this:
Selection Path Priority Status
------------------------------------------------------------
* 0 /usr/bin/g++ 20 auto mode
1 /usr/bin/clang++ 10 manual mode
2 ...
What is the difference between NULL, '\0' and 0?
...xDEADBEEF)
as these are seen by a compiler as normal comparisons.
Null Characters
'\0' is defined to be a null character - that is a character with all bits set to zero. This has nothing to do with pointers. However you may see something similar to this code:
if (!*string_pointer)
checks if ...
How to get all columns' names for all the tables in MySQL?
...
select * from information_schema.columns
where table_schema = 'your_db'
order by table_name,ordinal_position
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How to enable local network users to access my WAMP sites?
...y >> Windows Firewall then
click on “Advance Setting” and then select “Inbound Rules” from the
left panel and then click on “Add Rule…”. Select “PORT” as an option
from the list and then in the next screen select “TCP” protocol and
enter port number “8081” und...
Values of disabled inputs will not be submitted
...lements support the disabled attribute: BUTTON, INPUT,
OPTGROUP, OPTION, SELECT, and TEXTAREA.
This attribute is inherited but local declarations override the
inherited value.
How disabled elements are rendered depends on the user agent. For
example, some user agents "gray out" disab...
How to create relationships in MySQL
...s defined as the default storage engine,can check using command (mysql> SELECT @@default_storage_engine;)
– Arun
Feb 18 at 4:00
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