Elimina le stringhe in un elenco che contengono una parolaHo un elenco di nomi di file da cui desidero selezionare determinati file. Le prime 4 cifre sono l'anno in cui il carattere di sottolineatura si comporta come un delimitatore, "abc" è solo un identificatore per il tipo di file, il numero di 3 cifre è l'id e "riepilogo" o "risultato" si riferisce al tipo di file.
Per prima cosa, voglio solo guardare i file "risultato". Non riuscivo a capire come rimuovere tutti i file di "riepilogo" dal mio elenco.
{"2021_abc_027_result.csv", "2021_abc_027_summary.csv", "2021_abc_028_result.csv",
"2021_abc_028_summary.csv", "2021_abc_029_result.csv", "2021_abc_029_summary.csv",
"2021_abc_038_result.csv", "2021_abc_038_summary.csv", "2021_abc_040_result.csv",
"2021_abc_040_summary.csv", "2021_abc_041_result.csv", "2021_abc_041_summary.csv",
"2021_abc_042_result.csv", "2021_abc_042_summary.csv", "2021_abc_043_result.csv",
"2021_abc_043_summary.csv", "2021_abc_044_result.csv", "2021_abc_044_summary.csv",
"2021_abc_045_result.csv", "2021_abc_045_summary.csv", "2021_abc_046_result.csv",
"2021_abc_046_summary.csv", "2021_abc_047_result.csv", "2021_abc_047_summary.csv",
"2021_abc_048_result.csv", "2021_abc_048_summary.csv", "2021_abc_049_result.csv",
"2021_abc_049_summary.csv", "2021_abc_050_result.csv", "2021_abc_050_summary.csv",
"2021_abc_051_result.csv", "2021_abc_051_summary.csv", "2021_abc_052_result.csv",
"2021_abc_052_summary.csv", "2021_abc_053_result.csv", "2021_abc_053_summary.csv",
"2021_abc_054_result.csv", "2021_abc_054_summary.csv", "2021_abc_055_result.csv",
"2021_abc_055_summary.csv", "2021_abc_056_result.csv", "2021_abc_056_summary.csv",
"2021_abc_057_result.csv", "2021_abc_057_summary.csv", "2021_abc_058_result.csv",
"2021_abc_058_summary.csv", "2021_abc_059_result.csv", "2021_abc_059_summary.csv",
"2021_abc_060_result.csv", "2021_abc_060_summary.csv", "2021_abc_061_result.csv",
"2021_abc_061_summary.csv", "2021_abc_062_result.csv", "2021_abc_062_summary.csv",
"2021_abc_063_result.csv", "2021_abc_063_summary.csv", "2021_abc_064_result.csv",
"2021_abc_064_summary.csv", "2021_abc_065_result.csv", "2021_abc_065_summary.csv",
"2021_abc_067_result.csv"}
In secondo luogo, voglio selezionare i file in base all'anno e al codice a 3 cifre.
Ho fatto qualcosa di simile in passato per selezionare i file usando regex dove c'era un solo numero nella stringa, quindi ho usato
For( i = 1, i <= N Items( FileList ), i++,
FileList[i] = regex(FileList[i], "([0-9]+)", "\1")
);
ma in questo caso finisco con un elenco di "2021", "2021", ...
Idealmente, finirei con un elenco simile
{"2021_027 ", "2021_027 ", "2021_028 ",
"2021_028 ", "2021_029 ", "2021_029 ",
"2021_038 ", "2021_038 ", "2021_040 ",
"2021_040 ", "2021_041 ", "2021_041 ",
"2021_042 ", "2021_042 ", "2021_043 ",
"2021_043 ", "2021_044 ", "2021_044 ",
"2021_045 ", "2021_045 ", "2021_046 ",
"2021_046 ", "2021_047 ", "2021_047 ",
"2021_048 ", "2021_048 ", "2021_049 ",
"2021_049 ", "2021_050 ", "2021_050 ",
"2021_051 ", "2021_051 ", "2021_052 ",
"2021_052 ", "2021_053 ", "2021_053 ",
"2021_054 ", "2021_054 ", "2021_055 ",
"2021_055 ", "2021_056 ", "2021_056 ",
"2021_057 ", "2021_057 ", "2021_058 ",
"2021_058 ", "2021_059 ", "2021_059 ",
"2021_060 ", "2021_060 ", "2021_061 ",
"2021_061 ", "2021_062 ", "2021_062 ",
"2021_063 ", "2021_063 ", "2021_064 ",
"2021_064 ", "2021_065 ", "2021_065 ",
"2021_067 "}e poi potrei selezionare da quell'elenco i file che voglio usare.
Anche eventuali suggerimenti su come imparare a regex meglio sono i benvenuti.
Grazie!
ScriptingRi: Elimina le stringhe in un elenco che contengono una parolaCiao,
Ecco un approccio di forza bruta al tuo problema che aggira la necessità di usare regex (non sono troppo bravo con quelli).
Names default to Here (1);
StartList = {"2021_abc_027_result.csv", "2021_abc_027_summary.csv", "2021_abc_028_result.csv",
"2021_abc_028_summary.csv", "2021_abc_029_result.csv", "2021_abc_029_summary.csv",
"2021_abc_038_result.csv", "2021_abc_038_summary.csv", "2021_abc_040_result.csv",
"2021_abc_040_summary.csv", "2021_abc_041_result.csv", "2021_abc_041_summary.csv",
"2021_abc_042_result.csv", "2021_abc_042_summary.csv", "2021_abc_043_result.csv",
"2021_abc_043_summary.csv", "2021_abc_044_result.csv", "2021_abc_044_summary.csv",
"2021_abc_045_result.csv", "2021_abc_045_summary.csv", "2021_abc_046_result.csv",
"2021_abc_046_summary.csv", "2021_abc_047_result.csv", "2021_abc_047_summary.csv",
"2021_abc_048_result.csv", "2021_abc_048_summary.csv", "2021_abc_049_result.csv",
"2021_abc_049_summary.csv", "2021_abc_050_result.csv", "2021_abc_050_summary.csv",
"2021_abc_051_result.csv", "2021_abc_051_summary.csv", "2021_abc_052_result.csv",
"2021_abc_052_summary.csv", "2021_abc_053_result.csv", "2021_abc_053_summary.csv",
"2021_abc_054_result.csv", "2021_abc_054_summary.csv", "2021_abc_055_result.csv",
"2021_abc_055_summary.csv", "2021_abc_056_result.csv", "2021_abc_056_summary.csv",
"2021_abc_057_result.csv", "2021_abc_057_summary.csv", "2021_abc_058_result.csv",
"2021_abc_058_summary.csv", "2021_abc_059_result.csv", "2021_abc_059_summary.csv",
"2021_abc_060_result.csv", "2021_abc_060_summary.csv", "2021_abc_061_result.csv",
"2021_abc_061_summary.csv", "2021_abc_062_result.csv", "2021_abc_062_summary.csv",
"2021_abc_063_result.csv", "2021_abc_063_summary.csv", "2021_abc_064_result.csv",
"2021_abc_064_summary.csv", "2021_abc_065_result.csv", "2021_abc_065_summary.csv",
"2021_abc_067_result.csv"};
ResultList = {};
For (i = 1, i <= N Items (StartList), i++,
if (contains (StartList [i], "result"), insert into (ResultList, StartList[i]))
);
Show (ResultList); // Yields a clean list with results only
FileList = {};
For (i= 1 , i <= N Items (ResultList), i++,
Insert into (FileList, Word (1, ResultList [i], "_") || "_" || Word (3, ResultList [i], "_"))
);
Show (FileList); // Yields the file Year and Numerical ID
È quindi possibile utilizzare tale elenco per alimentare un ListBox o recuperare direttamente il file corrispondente con la funzione Contains ().
Leggerò di più sulle espressioni regolari per la prossima volta.
Migliore,
TS
Ri: Elimina le stringhe in un elenco che contengono una parolaEcco un approccio regex:
Names Default To Here( 1 );
Assign(
file_lst,
{"2021_abc_027_result.csv", "2021_abc_027_summary.csv", "2021_abc_028_result.csv", "2021_abc_028_summary.csv", "2021_abc_029_result.csv",
"2021_abc_029_summary.csv", "2021_abc_038_result.csv", "2021_abc_038_summary.csv", "2021_abc_040_result.csv", "2021_abc_040_summary.csv",
"2021_abc_041_result.csv", "2021_abc_041_summary.csv", "2021_abc_042_result.csv", "2021_abc_042_summary.csv", "2021_abc_043_result.csv",
"2021_abc_043_summary.csv", "2021_abc_044_result.csv", "2021_abc_044_summary.csv", "2021_abc_045_result.csv", "2021_abc_045_summary.csv",
"2021_abc_046_result.csv", "2021_abc_046_summary.csv", "2021_abc_047_result.csv", "2021_abc_047_summary.csv", "2021_abc_048_result.csv",
"2021_abc_048_summary.csv", "2021_abc_049_result.csv", "2021_abc_049_summary.csv", "2021_abc_050_result.csv", "2021_abc_050_summary.csv",
"2021_abc_051_result.csv", "2021_abc_051_summary.csv", "2021_abc_052_result.csv", "2021_abc_052_summary.csv", "2021_abc_053_result.csv",
"2021_abc_053_summary.csv", "2021_abc_054_result.csv", "2021_abc_054_summary.csv", "2021_abc_055_result.csv", "2021_abc_055_summary.csv",
"2021_abc_056_result.csv", "2021_abc_056_summary.csv", "2021_abc_057_result.csv", "2021_abc_057_summary.csv", "2021_abc_058_result.csv",
"2021_abc_058_summary.csv", "2021_abc_059_result.csv", "2021_abc_059_summary.csv", "2021_abc_060_result.csv", "2021_abc_060_summary.csv",
"2021_abc_061_result.csv", "2021_abc_061_summary.csv", "2021_abc_062_result.csv", "2021_abc_062_summary.csv", "2021_abc_063_result.csv",
"2021_abc_063_summary.csv", "2021_abc_064_result.csv", "2021_abc_064_summary.csv", "2021_abc_065_result.csv", "2021_abc_065_summary.csv",
"2021_abc_067_result.csv"}
);
For( i = 1, i <= N Items( file_lst ), i++,
print( eval(Regex( file_lst[i], "^([0-9]+)_([a-z]{3})_([0-9]{3}).*result", "Fullname: \0 Part1: \1 Part2: \2 Part3: \3" )) )
);Ri: Elimina le stringhe in un elenco che contengono una parolaEcco un altro approccio.Mi piace usare la funzione RegexMatch (SourceStr, patStr).punto asterisco (. *) è simile all'utilizzo di% in una funzione di database Like.Poiché desideri rimuovere gli elementi dalla tua lista, devi iniziare dalla fine della lista altrimenti il tuo indice è danneggiato.
Names Default to Here(1);
FileList = {"2021_abc_027_result.csv", "2021_abc_027_summary.csv", "2021_abc_028_result.csv",
"2021_abc_028_summary.csv", "2021_abc_029_result.csv", "2021_abc_029_summary.csv",
"2021_abc_038_result.csv", "2021_abc_038_summary.csv", "2021_abc_040_result.csv",
"2021_abc_040_summary.csv", "2021_abc_041_result.csv", "2021_abc_041_summary.csv",
"2021_abc_042_result.csv", "2021_abc_042_summary.csv", "2021_abc_043_result.csv",
"2021_abc_043_summary.csv", "2021_abc_044_result.csv", "2021_abc_044_summary.csv",
"2021_abc_045_result.csv", "2021_abc_045_summary.csv", "2021_abc_046_result.csv",
"2021_abc_046_summary.csv", "2021_abc_047_result.csv", "2021_abc_047_summary.csv",
"2021_abc_048_result.csv", "2021_abc_048_summary.csv", "2021_abc_049_result.csv",
"2021_abc_049_summary.csv", "2021_abc_050_result.csv", "2021_abc_050_summary.csv",
"2021_abc_051_result.csv", "2021_abc_051_summary.csv", "2021_abc_052_result.csv",
"2021_abc_052_summary.csv", "2021_abc_053_result.csv", "2021_abc_053_summary.csv",
"2021_abc_054_result.csv", "2021_abc_054_summary.csv", "2021_abc_055_result.csv",
"2021_abc_055_summary.csv", "2021_abc_056_result.csv", "2021_abc_056_summary.csv",
"2021_abc_057_result.csv", "2021_abc_057_summary.csv", "2021_abc_058_result.csv",
"2021_abc_058_summary.csv", "2021_abc_059_result.csv", "2021_abc_059_summary.csv",
"2021_abc_060_result.csv", "2021_abc_060_summary.csv", "2021_abc_061_result.csv",
"2021_abc_061_summary.csv", "2021_abc_062_result.csv", "2021_abc_062_summary.csv",
"2021_abc_063_result.csv", "2021_abc_063_summary.csv", "2021_abc_064_result.csv",
"2021_abc_064_summary.csv", "2021_abc_065_result.csv", "2021_abc_065_summary.csv",
"2021_abc_067_result.csv"};
patStr = "2021.*result.*";
For(i = nitems(FileList), i>=1, i--,
SourceStr = FileList[i] ;
ret = Try( Regex Match( SourceStr, patStr )[1], "" );
If( ret != SourceStr, RemoveFrom(FileList,i) );
); //end For i
Show(FileList);
Ri: Elimina le stringhe in un elenco che contengono una parolaTre soluzioni di alta qualità:
@Thierry_S - facile da capire e mantenere
@ Georg - esattamente come viene utilizzata la sostituzione delle espressioni regolari
@ gzmorgan0 - rimozione efficiente da un elenco lavorando a ritroso
Puoi combinare queste idee per creare una soluzione ideale che sia facile da mantenere, efficiente e che rappresenti chiaramente il problema che stai risolvendo.
