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How to run a command before a Bash script exits?
If a Bash script has set -e , and a command in the script returns an error, how can I do some cleanup before the script exits?
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What is the “__v” field in Mongoose
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From here:
The versionKey is a property set on each document when first created
by Mongoose. This keys value contains the internal revision of the
document. The name of this document property is configurable. The
default is __v.
If this conflicts with yo...
Fastest way to check if a value exists in a list
...7 in a
Clearest and fastest way to do it.
You can also consider using a set, but constructing that set from your list may take more time than faster membership testing will save. The only way to be certain is to benchmark well. (this also depends on what operations you require)
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Where are ${EXECUTABLE_NAME} and ${PRODUCT_NAME} defined
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The PRODUCT_NAME is defined in the target's Build Settings in the Packaging section. It has the same name by default as your project.
Edit:
While PRODUCT_NAME is by default the name of the Target (MyDemoApp in this case). The EXECUTABLE_NAME is a concatenation of:
$EXEC...
Entity Framework code first unique column
...Annotations.Schema;
If your model field is a string, make sure it is not set to nvarchar(MAX) in SQL Server or you will see this error with Entity Framework Code First:
Column 'x' in table 'dbo.y' is of a type that is invalid for use as a key column in an index.
The reason is because of this...
Ruby: How to iterate over a range, but in set increments?
... editor after snippets, if snippets enabled
if (StackExchange.settings.snippets.snippetsEnabled) {
StackExchange.using("snippets", function() {
createEditor();
});
}
else {
createEditor();
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How to programmatically set the layout_align_parent_right attribute of a Button in Relative Layout?
...T);
params.addRule(RelativeLayout.LEFT_OF, R.id.id_to_be_left_of);
button.setLayoutParams(params); //causes layout update
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How do you remove a Cookie in a Java Servlet
...ou want the cookie to persist for the duration of the session. You want to set MaxAge to 0 instead.
From the API documentation:
A negative value means that the cookie is not stored persistently and will be deleted when the Web browser exits. A zero value causes the cookie to be deleted.
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How to grant permission to users for a directory using command line in Windows?
...ing from the *nix world and being used to 'chown/chmod' to give access and set permissions via the CLI, this thread has been very helpful.
– bgarlock
Oct 27 '15 at 14:40
6
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When should use Readonly and Get only properties
...le
f.FillFuelTank(10); // Value is changed from the method's code
}
Setting the private field of your class as readonly allows you to set the field value only once (using an inline assignment or in the class constructor).
You will not be able to change it later.
public class ReadOnlyFields {...