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Converting datetime.date to UTC timestamp in Python
... your code will run under, but it's important to note that the '%s' format string does not exist on all OSes, so this code is not portable. If you want to check whether it's supported you can check man strftime on Unix-like systems.
– Alice Heaton
Feb 4 '16 at ...
Should switch statements always contain a default clause?
...
There's no reason to include more information than just the "unreachable" string; if it actually happens, you're going to need to look at the source and the values of the variables etc anyway, and the exception stacktrace will include that line number, so no need to waste your time writing more tex...
Visual C++: How to disable specific linker warnings?
... from the fact that it can't be turned off. (Noted here since there's zero extra information at that link.)
– Ben M
Dec 7 '12 at 21:14
...
How do I assign a port mapping to an existing Docker container?
...) or hacking hostconfig.json file(at least not officially introduced). The extra container just exposes your business container's internal port, rather than makeing any changes to it.
– Sean C.
Mar 10 '18 at 10:59
...
“Unknown class in Interface Builder file” error at runtime
...ompiled from the .xib) is loaded at runtime, MyClass is referenced using a string, but the linker doesn't analyze code functionality, just code existence, so it doesn't know that. Since no other source files references that class, the linker optimizes it out of existence when making the executable....
Why does one often see “null != variable” instead of “variable != null” in C#?
...
In earlier times, people would forget the '!' (or the extra '=' for equality, which is more difficult to spot) and do an assignment instead of a comparison. putting the null in front eliminates the possibility for the bug, since null is not an l-value (I.E. it can't be assigned ...
How do I programmatically determine operating system in Java?
...find this code useful:
class ShowProperties {
public static void main(String[] args) {
System.getProperties().list(System.out);
}
}
All it does is print out all the properties provided by your Java implementations. It'll give you an idea of what you can find out about your Java en...
Looping through a hash, or using an array in PowerShell
...ameter 'Process'. Cannot convert the "getEnumerator" value of type "System.String" to type "System.Management.Automation.ScriptBlock"
– luis.espinal
Jan 27 '16 at 16:46
add a ...
Add a default value to a column through a migration
..., since change_column is irreversible.
Instead, though it may be a couple extra lines, you should use def up and def down
So if you have a column with no default value, then you should do this to add a default value.
def up
change_column :users, :admin, :boolean, default: false
end
def down
...
How to call an async method from a getter or setter?
...alue will get populated without blocking the UI, when getTitle() returns.
string _Title;
public string Title
{
get
{
if (_Title == null)
{
Deployment.Current.Dispatcher.InvokeAsync(async () => { Title = await getTitle(); });
}
return _Title;...