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How to make an Android Spinner with initial text “Select One”?
...lly (when the user has not made a selection yet) displays the text "Select One". When the user clicks the spinner, the list of items is displayed and the user selects one of the options. After the user has made a selection, the selected item is displayed in the Spinner instead of "Select One".
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Replace a value in a data frame based on a conditional (`if`) statement
...he factor level b to the factor nm. diliop's version is in fact the better one if you want to work with characters, not factors. (Always think about the type your variables have first!)
– Thilo
Apr 28 '11 at 20:18
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How can I force Powershell to return an array when a call only returns one object?
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Define the variable as an array in one of two ways...
Wrap your piped commands in parentheses with an @ at the beginning:
$serverIps = @(gwmi Win32_NetworkAdapterConfiguration
| Where { $_.IPAddress }
| Select -Expand IPAddress
| Where { $_ -l...
How can I make one python file run another? [duplicate]
How can I make one python file to run another?
8 Answers
8
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When to use references vs. pointers
...der to read when there's no indication of what's happening, why should add_one(a) not return the result, rather than set it by reference?
– connec
Aug 14 '11 at 18:21
46
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Are braces necessary in one-line statements in JavaScript?
I once heard that leaving the curly braces in one-line statements could be harmful in JavaScript. I don't remember the reasoning anymore and a Google search did not help much.
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What's the difference between an id and a class?
...ou do not need to use it just because it exists. Saying that you have only one header and such so you need id instead of class might be correct. But let's say you have a search bar with style properties. If you wanted to add another search bar with the same properties in the end of page later too yo...
Relational table naming convention [closed]
... Beware of the heathens. Plural in the table names are a sure sign of someone who has not read any of the standard materials and has no knowledge of database theory.
Some of the wonderful things about Standards are:
they are all integrated with each other
they work together
they were written ...
How to resolve merge conflicts in Git?
...er comment:
The command
doesn't necessarily open a GUI unless you install one. Running git mergetool for me resulted in vimdiff being used. You can install
one of the following tools to use it instead: meld, opendiff,
kdiff3, tkdiff, xxdiff, tortoisemerge, gvimdiff, diffuse,
ecmerge, p4merge, araxi...
What is the difference between print and puts?
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puts adds a new line to the end of each argument if there is not one already.
print does not add a new line.
For example:
puts [[1,2,3], [4,5,nil]] Would return:
1
2
3
4
5
Whereas print [[1,2,3], [4,5,nil]]
would return:
[[1,2,3], [4,5,nil]]
Notice how puts does not output the ...