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When to use generic methods and when to use wild-card?
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175
There are certain places, where wildcards, and type parameters do the same thing. But there ar...
What is “lifting” in Haskell?
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182
Lifting is more of a design pattern than a mathematical concept (although I expect someone aro...
What is the difference between client-side and server-side programming?
... var baz = <?php echo 42; ?>;
alert(baz);
</script>
Step 1, PHP executes all code between <?php ?> tags. The result is this:
<script type="text/javascript">
var foo = 'bar';
var baz = 42;
alert(baz);
</script>
The file_put_contents call did not res...
TypeError: unhashable type: 'dict'
...ey] = True
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
TypeError: unhashable type: 'dict'
To use a dict as a key you need to turn it into something that may be hashed first. If the dict you wish to use as key consists of only immutable values, you can creat...
What does “&” at the end of a linux command mean?
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148
The & makes the command run in the background.
From man bash:
If a command is termina...
How to give border to any element using css without adding border-width to the whole width of elemen
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11 Answers
11
Active
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Standard Android Button with a different color
...ckground="@drawable/custom_button" in your button view:
<?xml version="1.0" encoding="utf-8"?>
<selector
xmlns:android="http://schemas.android.com/apk/res/android">
<item android:state_pressed="true" >
<shape>
<gradient
android...