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Remove redundant entries, scala way


Remove redundant entries, scala way

By : sauf
Date : November 21 2020, 07:01 PM
it helps some times When you are comparing the consecutive entries in a list, start by zip-ping the list with its tail to get a list of pairs of consecutive elements.
Below, I take the first entry from the list, and use collect to simultaneously filter out pairs where the production is unchanged, and for the remaining pairs, map e2. (collect is new in Scala 2.8, and for a while was called partialMap)
code :


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PHP MYSQL import CSV and then compare and remove redundant entries

PHP MYSQL import CSV and then compare and remove redundant entries


By : shravan
Date : March 29 2020, 07:55 AM
This might help you Just keep an account of your keys.
Save every $key in an array in your while, and in the end run a query that says
code :
DELETE FROM tabel WHERE key NOT IN (listofcommaseparatedkeysgoeshere)
$arrayThatYouNeedToTest = array();
$handle = fopen($file,"r");
fgetcsv($handle, 1000, ",");//skip first row since they are headers
while(($fileop = fgetcsv($handle, 1000, ",")) !== false) //read line by line into $fileop
{
  //read array values into vars
  $item1 = $fileop[0];
  $item2 = $fileop[1];
  $key = $fileop[2];
  // and a couple more

  // now INSERT / UPDATE data in MySQL table
  $sql = mysql_query("INSERT INTO table (item1,item2,key) 
    VALUES ('$item1','$item2','$key') 
    ON DUPLICATE KEY UPDATE item1='$item1',item2='$item2'");

   $arrayThatYouNeedToTest[] = $key;    

}

$stringThatYouNeedToInspect = implode(",",$arrayThatYouNeedToTest);
$queryYouREALLYneedToCheckFirst = "DELETE FROM tabel WHERE key NOT IN  (".$stringThatYouNeedToInspect.")";

//$result = mysql_query($queryYouREALLYneedToCheckFirst);
Query to remove all redundant entries from a table

Query to remove all redundant entries from a table


By : sidmoney
Date : March 29 2020, 07:55 AM
I think the issue was by ths following , I have a Postgres table that describes relationships between entities, this table is populated by a process which I cannot modify. This is an example of that table: , A general solution is to use the always unique pseudo-column ctid:
code :
DELETE FROM foo USING foo b WHERE foo.e2 = b.e1 AND foo.e1 = b.e2
    AND foo.ctid > b.ctid;
How do I remove redundant iOS simulator entries from Xcode?

How do I remove redundant iOS simulator entries from Xcode?


By : Rajesh O
Date : March 29 2020, 07:55 AM
it helps some times How do I remove all these extra simulators from my Xcode menu? , XCode > Window > Devices :
Delete redundant entries within groups

Delete redundant entries within groups


By : Doz
Date : March 29 2020, 07:55 AM
Any of those help Here's a different approach using the same basic strategy as Bharath shetty's solution. This way feels a bit neater to me.
First, construct the example data frame:
code :
import pandas as pd
data = {"datasource": [1,1,2,3,3,3,3],
        "city": ["Shallotte", None, "austin", "Casselberry", None, "Springfield", None],
        "country": ["US", "US", "US", "US", "AU", None, None]}
df = pd.DataFrame(data)

df['null'] = df.isnull().sum(axis=1)

print(df)
          city country  datasource  null
0    Shallotte      US           1     0
1         None      US           1     1
2       austin      US           2     0
3  Casselberry      US           3     0
4         None      AU           3     1
5  Springfield    None           3     1
6         None    None           3     2
def null_filter(d):
    if len(d) > 1:
        return d.null < d.null.max()
    return d.null == d.null

mask = df.groupby("datasource").apply(null_filter).values

df.loc(mask).drop("null", 1)
             city country  datasource
0    Shallotte      US           1
2       austin      US           2
3  Casselberry      US           3
4         None      AU           3
5  Springfield    None           3
remove redundant entries from list of paths

remove redundant entries from list of paths


By : Mehbube Arman
Date : March 29 2020, 07:55 AM
hop of those help? I have a list of files and directories. I'm trying to write a function to remove entries where there is also an entry for an ancestor directory present. What I have so far seems to work, but I think it is inefficient because it tests the full list of directories for every file. , If you sort your input list of entries, then the problem is easier:
code :
def remove_redundant_entries(entries):

    split_entries = sorted(entries)

    valid_entries = []

    for entry in split_entries:

        if any(entry.startswith(p) for p in valid_entries):
            continue
        valid_entries.append(entry)

    return valid_entries
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