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What is the best way to concatenate two vectors?
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answered Jul 5 '10 at 4:39
Kirill V. LyadvinskyKirill...
Exit codes in Python
I got a message saying script xyz.py returned exit code 0 . What does this mean?
13 Answers
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Declaring a custom android UI element using XML
...Guide has a section called Building Custom Components. Unfortunately, the discussion of XML attributes only covers declaring the control inside the layout file and not actually handling the values inside the class initialisation. The steps are as follows:
1. Declare attributes in values\attrs.xml
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Meaning of $? (dollar question mark) in shell scripts
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This is the exit status of the last executed command.
For example the command true always returns a status of 0 and false always returns a status of 1:
true
echo $? # echoes 0
false
echo $? # echoes 1
From the manual: (aces...
Why does an SSH remote command get fewer environment variables then when run manually? [closed]
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There are different types of shells. The SSH command execution shell is a non-interactive shell, whereas your normal shell is either a login shell or an interactive shell. Description follows, from man bash:
A login shell is one whose first character of argument
zero is a -...
How to make an ImageView with rounded corners?
In Android, an ImageView is a rectangle by default. How can I make it a rounded rectangle (clip off all 4 corners of my Bitmap to be rounded rectangles) in the ImageView?
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Python logging not outputting anything
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The default logging level is warning.
Since you haven't changed the level, the root logger's level is still warning.
That means that it will ignore any logging with a level that is lower than warning, including debug loggings.
This is explained in th...
Convert interface{} to int
...erenced specs parts:
Conversions are expressions of the form T(x) where T is a type and x is an expression that can be converted to type T.
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A non-constant value x can be converted to type T in any of these cases:
x is assignable to T.
x's type and T have identical underlying types.
x's type ...
Which characters are valid in CSS class names/selectors?
...followed by any number of hyphens, underscores, letters, or numbers. There is a catch: if the first character is a hyphen, the second character must2 be a letter or underscore, and the name must be at least 2 characters long.
-?[_a-zA-Z]+[_a-zA-Z0-9-]*
In short, the previous rule translates to t...
simulate background-size:cover on or
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This is something I pulled my hair out over for a while, but I came across a great solution that doesn't use any script, and can achieve a perfect cover simulation on video with 5 lines of CSS (9 if you count selectors and brac...