How can I iterate over a InputArray and load another input array with the same values except in lower case (I know that there is a string to lower function)?
Question: How to iterate over a String List with a LOOP structure?
InputArray: A, B, C
OutputArray should be: a, b, c
In case, you want to retain the inputArray as such and save the lowercase values in an outputArray, then follow steps in below image which is self explanatory:
In the loop Step, Input Array should be /inputArray and Output Array should be /outputArray.
Your InputArray field looks like a string field. It's not a string list.
You need to use pub.string:tokenize from the WmPublic package to split your strings into a string list and then loop through the string list.
A string field looks like this in the pipeline:
A string list looks like this in the pipeline:
See the subtle difference in the little icon at the left ?
I can see two cases out here.
If your input is a string
Convert the string to stringlist by pub.string:tokenize service.
Loop over the string list by providing the name of string list in input array property of loop.
within loop use pub.string:toLower service as transformer and map the output to an output string.
put the output string name in the output array property of Loop.
once you come out of the loop you will see two string lists, one with upper case and one with lower case.
If your input is a string list.
In this case follow steps 2 to 5 as mentioned above.
Related
I want to convert a string object from json file into integer using pyspark.
df1.select(df1["`result.price`"]).dtypes
Out[15]: [('result.price', 'string')]
df1=df1.withColumn(df1.select(df1["`result.price`"]),F.col(df1.select(df1["`result.price`"])).cast(T.IntegerType()))
'DataFrame' object has no attribute '_get_object_id'
If you want to modify inline:
Since you are trying to modify the data type of nested struct field, I think you need to apply the new StructType.
Take a look at this https://stackoverflow.com/a/63270808/2956135
If you are okay with extracting to a different column:
df1 = df1.withColumn('price', F.col('result.price').cast(T.IntegerType()))
TL;DR
Why your line gives an error?
There is a few mistakes in this syntax.
df1 = df1.withColumn(df1.select(df1["`result.price`"]),F.col(df1.select(df1["`result.price`"])).cast(T.IntegerType()))
First, 1st argument of withColumn has to be string of a column name that you want to save as.
Second, F.col's argument has to be string of a column name or reference to the column.
So, this syntax should not throw an error, however, the casted value is saved to the new column.
df1 = df1.withColumn('result.price', F.col('result.price').cast(T.IntegerType()))
I have a server log, it continuously records json values without any delimiter, such as:
{"a":1}{"b",2}{"a":2}{"c":{\"qwe\":\"asd\"},"d":"ert"}{"e":12}....
I want to extract each element and put them into rows like:
{"a":1}
{"b",2}
{"a":2}
{"c":{\"qwe\":\"asd\"},"d":"ert"}
{"e":12}..
The log lacks delimiter and comprises nested json, so I cannot use
split function...How to achieve this...
One option would be to split on }{ character and get the elements using posexplode. Positions are only needed to concatenate properly for the first and last elements.
select case when pos = 0 then concat(split_str,'}')
when pos = max(pos) over(partition by str) then concat('{',split_str)
else concat('{',split_str,'}') end as res
from tbl
lateral view posexplode(split(str,'\\}\\{')) t as pos,split_str
Note the result will be a string.
When practicing with Octave I created a variable with the name my_name = ["Andrew"] and upon asking Octave to interpret whether it was a string it outputted a '0'. Again when using the typeinfo(my_name) I got ans = string. Why am I getting this sort of output?
octave:47> my_name = ["Andrew"]
my_name = Andrew
octave:48> isstring(my_name)
ans = 0
octave:49> typeinfo(my_name)
ans = string
According to the documentation (emphasis mine):
isstring (s)
Return true if s is a string array.
A string array is a data type that stores strings (row vectors of characters) at each element in the array. It is distinct from character arrays which are N-dimensional arrays where each element is a single 1x1 character. It is also distinct from cell arrays of strings which store strings at each element, but use cell indexing ‘{}’ to access elements rather than string arrays which use ordinary array indexing ‘()’.
Programming Note: Octave does not yet implement string arrays so this function will always return false.
That is, isstring will always return false (or 0), no matter what the input is.
You should use ischar to determine if the input is a character array (==string).
I have a select that I get Json post with http, but I try to sets initially selected index but there is nothing in the list do not select anything. because the json is great.
public AppMainScreen() {
loadLists();
MySelect = new ObjectChoiceField( "Select: ", new Object[0], 3 );
VerticalFieldManager vfm = new VerticalFieldManager(Manager.VERTICAL_SCROLL);
vfm.add(MySelect);
add(vfm);
}
This statement appears wrong to me:
new ObjectChoiceField( "Select: ", new Object[0],3);
The second parameter to this constructor is supposed to be an array of objects whose .toString() method will be used to populate the choices. In this case, you have given it a 0 length array, i.e. no Objects. So there is nothing to choose. And then you have asked it to automatically select the 3rd item, and of course there is no 3rd item.
You should correct the code to actually supply an object array.
One option to make it easy is have your JSON load actually create a String array with one entry per selectable item. Then you use the index selected to identify the chosen item.
I would like to split a string like this in Access 2000 (Visual Basic function):
"[Results]
[Comments]"
in two parts:
the results part
the comments part
As you can notice, these two parts are separated by an empty line (always, this is our separator).
[Results] and [Comments] are blocks of text. We don't care what's in it except:
the results part doesn't have any empty lines in it, so the first empty line we see is the separator one.
I want my function to extract the Comments part only.
Here is what i tried:
Public Function ExtractComm(txt As String) As String
Dim emptyLine As Integer
txt = Trim(txt)
'emptyLine = first empty line index ??
emptyLine = InStrRev(txt, (Chr(13) + Chr(10)) & (Chr(13) + Chr(10)))
'Comments part = all that is after the empty line ??
ExtractComm = Mid(txt, emptyLine + 4)
End Function
But it doesn't work well.
If I do:
ExtractComm(
"Res1
Res2
Comment1
Comment2"
)
I want to obtain:
"Comment1
Comment2"
but I only obtain Comment2. Any idea to extract the comment part ?
Thanks a lot !
Maybe you need to use InStr instead of InStrRev
InStrRev
Returns the position of the first occurrence of one string within another, starting from the right side of the string.
InStr
Returns an integer specifying the start position of the first occurrence of one string within another.