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Chrome Developer Tools: How to find out what is overriding a CSS rule?
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Use the Computed Style panel of the element inspector. Expand the property of interest to see the list of applicable rules, and which one won.
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How to copy a file to multiple directories using the gnu cp command
Is it possible to copy a single file to multiple directories using the cp command ?
22 Answers
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Why Func instead of Predicate?
...t; and Array<T>, in .net 2.0, the different Func and Action variants come from .net 3.5.
So those Func predicates are used mainly for consistency in the LINQ operators. As of .net 3.5, about using Func<T> and Action<T> the guideline states:
Do use the new LINQ types Func<&g...
How to find whether or not a variable is empty in Bash
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In Bash at least the following command tests if $var is empty:
if [[ -z "$var" ]]; then
# Do what you want
fi
The command man test is your friend.
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Automatic creation date for Django model form objects?
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I think @gregoltsov's comment is out of date at this point. Using auto_now_add or auto_now works just fine. It sets the field before saving the model (github.com/django/django/blob/stable/3.0.x/django/db/models/…).
– yndolo...
How can I use functional programming in the real world? [closed]
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How to forward declare a template class in namespace std?
... the only thing you're allowed to put in std is a template specialisation, commonly std::less on a user-defined type. Someone else can cite the relevant text if necessary.
Just #include <list> and don't worry about it.
Oh, incidentally, any name containing double-underscores is reserved for ...
How do you dynamically add elements to a ListView on Android?
...ng="utf-8"?>
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent" >
<Button
android:id="@+id/addBtn"
android:text="Add New Item"
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