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What does @@variable mean in Ruby?
... is in the comments at the end of the puts lines:
class Test
@@shared = 1
def value
@@shared
end
def value=(value)
@@shared = value
end
end
class AnotherTest < Test; end
t = Test.new
puts "t.value is #{t.value}" # 1
t.value = 2
puts "t.value is #{t.value}" # 2
x = Test.new...
Nullable type issue with ?: Conditional Operator
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edited Nov 17 '08 at 15:34
answered Nov 17 '08 at 15:21
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google oauth2 redirect_uri with several parameters
...r redirect uri as
state=THE_STATE_PARAMETERS
So for your case,do this:
/1. create a json string of your parameters ->
{ "a" : "b" , "c" : 1 }
/2. do a base64UrlEncode , to make it URL safe ->
stateString = base64UrlEncode('{ "a" : "b" , "c" : 1 }');
This is a PHP example of base64Url...
Break out of a While…Wend loop
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177
A While/Wend loop can only be exited prematurely with a GOTO or by exiting from an outer block...
PDO get the last ID inserted
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371
That's because that's an SQL function, not PHP. You can use PDO::lastInsertId().
Like:
$stmt ...
How do I remove all HTML tags from a string without knowing which tags are in it?
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edited Dec 31 '18 at 15:27
answered Aug 9 '13 at 19:14
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What do I return if the return type of a method is Void? (Not void!)
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104
So what am I supposed to return if the return type of a function has to be Void?
Use ret...
check if variable is dataframe
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195
Use isinstance, nothing else:
if isinstance(x, pd.DataFrame):
... # do something
PEP8...
Correct way to try/except using Python requests module?
...SystemExit(e)
As Christian pointed out:
If you want http errors (e.g. 401 Unauthorized) to raise exceptions, you can call Response.raise_for_status. That will raise an HTTPError, if the response was an http error.
An example:
try:
r = requests.get('http://www.google.com/nothere')
r.raise...
Sprintf equivalent in Java
Printf got added to Java with the 1.5 release but I can't seem to find how to send the output to a string rather than a file (which is what sprintf does in C). Does anyone know how to do this?
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