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How to avoid warning when introducing NAs by coercion
...roblematic characters to NA first. For your particular problem, taRifx::destring does just that. This way if you get some other, unexpected warning out of your function, it won't be suppressed.
> library(taRifx)
> x <- as.numeric(c("1", "2", "X"))
Warning message:
NAs introduced by coerc...
Hiding elements in responsive layout?
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New visible classes added to Bootstrap
Extra small devices
Phones (<768px) (Class names : .visible-xs-block, hidden-xs)
Small devices
Tablets (≥768px) (Class names : .visible-sm-block, hidden-sm)
Medium devices
Desktops (≥992px) (Class names : .visible-md...
Call PowerShell script PS1 from another PS1 script inside Powershell ISE
...lit-Path : Cannot bind argument to parameter 'Path' because it is an empty string. At line:4 char:25 + $ScriptPath = Split-Path <<<< $MyInvocation.InvocationName + CategoryInfo : InvalidData: (:) [Split-Path], ParameterBindingValidationException + FullyQualifiedErrorId ...
How to enter a multi-line command
...t is preceded by a valid statement:
return
5
will not work.
Finally, strings (in all varieties) may also extend beyond a single line:
'Foo
bar'
They include the line breaks within the string, then.
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Is there any kind of hash code function in JavaScript?
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JavaScript objects can only use strings as keys (anything else is converted to a string).
You could, alternatively, maintain an array which indexes the objects in question, and use its index string as a reference to the object. Something like this:
var Ob...
What are these ^M's that keep showing up in my files in emacs?
... fix them yourself.
Edit: I found the following Python sample code here:
string.replace( str, '\r', '' )
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Check if string ends with one of the strings from a list
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If you want to check if a string ends with a letter: import string; str.endswith(tuple(string.ascii_lowercase))
– Alex Willison
May 16 '17 at 13:43
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How can you make a custom keyboard in Android?
...he key is pressed. See keyOutputText if you want to input a longer Unicode string.
keyLabel: This is the text that is displayed on the key.
keyEdgeFlags: This indicates which edge the key should be aligned to.
isRepeatable: If you hold down the key it will keep repeating the input.
method.xml
Th...
Regular expression to match a word or its prefix
... preg_match('(dart|fart)', $gun4);
0
Variables gun1 and gun2 contain the string dart or fart which is correct, but gun3 contains darty and still matches, that is the problem. So onto the next example.
Match specific words on the commandline with word boundaries:
Word Boundaries can be force mat...
Rails 3: Get Random Record
...ect_type | table | type | possible_keys | key | key_len | ref | rows | Extra |
+----+-------------+-------+------+---------------+------+---------+------+--------+---------------------------------+
| 1 | SIMPLE | users | ALL | NULL | NULL | NULL | NUL...