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Why is volatile needed in C?
... is busy:
while (gadget->isbusy)
{
// do nothing here.
}
// set data first:
gadget->data = data;
// writing the command starts the action:
gadget->command = command;
}
Looks easy, but it can fail because the compiler is free to change the order in which data and comma...
When to add what indexes in a table in Rails
... is for a background job and you need to save disk space you don't need to set it, but if the disk space is not an issue I would add an index anyway.
– jigfox
Mar 8 '13 at 14:17
...
CSS z-index paradox flower
... also using clip. The idea was to have half and half for the div. That way setting z-index would work.
So you can set the top part to z-index: -1 and the bottom to z-index: 1.
Outcome:
.item {
width: 50px;
height: 50px;
line-height: 50px;
border: 1px solid red;
background: s...
How to sleep for five seconds in a batch file/cmd [duplicate]
...rgument to hide the list of valid choices and only have 1 character in the set of choices so it will be less likely that the user will type a valid choice before the timeout expires.
Below is the help text on Windows Vista. I think it is the same on XP, but look at the help text on an XP computer ...
Correct approach to global logging in Golang
... log package, log.Logger. This global logger can be configured through log.SetFlags.
Afterwards one can just call the top level functions of the log package like log.Printf and log.Fatalf, which use that global instance.
sh...
Unit Testing C Code [closed]
...ars to be superseded by AceUnit. Embedded Unit homepage.
MinUnit
A minimal set of macros and that’s it! The point is to show how easy it is to unit test your code. See the MinUnit homepage.
CUnit for Mr. Ando
A CUnit implementation that is fairly new, and apparently still in early development. See...
How to reference style attributes from a drawable?
...
No, the support library is a set of APIs that can be used on older devices, this behavior change is in the compiler and build tools, so it's not related to the support library.
– marmor
Nov 1 '15 at 11:07
...
Difference between Service, Async Task & Thread?
...nTask getting trigger again. You can use Fragments to retain AsyncTask and set setRetainInstance(true) on the Fragment that will help you.
– Alejandro Serret
Sep 12 '17 at 18:38
...
Why does a function with no parameters (compared to the actual function definition) compile?
... then the function
does not take any and should be defined with an empty set of
parenthesis or with the keyword void. If no variable type is in front
of a variable in the paramater list, then int is assumed. Arrays and
functions are not passed to functions, but are automatically converted
...
PostgreSQL: Is it better to use multiple databases with one schema each, or one database with multip
...older for the dumps
dumpFile = '/test/dumps/' + str(newSchema) + '.sql'
# Settings
db_name = 'db_name'
db_user = 'db_user'
db_pass = 'db_pass'
schema_as_template = 'schema_name'
# Connection
pgConnect = pg.connect(dbname= db_name, host='localhost', user= db_user, passwd= db_pass)
# Rename schema ...