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I'm getting many errors like "Expected 'use strict' at column 4, not column 2." What does this mean?

By : Flo
Date : August 01 2020, 03:00 PM
With these it helps jslint wants your indentation to be in sets of 4 spaces rather than 2.
If you want to continue to indent by 2 spaces generally, you can add white: true to the jslint comment at the top of your file. This will ignore the whitespace warnings.
code :

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Combining "column-count" and "display: table" renders single column in Firefox

By : Priya Bari
Date : March 29 2020, 07:55 AM
Hope that helps Actually, I think Chrome and IE are the ones being wrong. They do give what you want, but they should not, like FF.
In your code you 'say' split-div-in-2-columns but essentially you put in only one ul. When you split your ul in two (see snippet) then FF works as expected, as do CH and IE BTW.
code :
div {
  -webkit-column-count: 2; /* Chrome, Safari, Opera */
  -moz-column-count: 2; /* Firefox */
  column-count: 2; /* demo code */
ul {
  display: table;
  margin: 0 auto;
ul, li {
    list-style-type: none; padding: 0;

div {
    width: 500px; /* just some width */
    border: 2px dashed silver;
    margin: 0 auto; /* center in body */
ul {
    -webkit-column-count: 2; /* Chrome, Safari, Opera */
    -moz-column-count: 2; /* Firefox */
    column-count: 2;
    margin: 0 auto; /* center in div */

li {
    border: 1px dotted red;

Delete rows from a table "A" where column "1" values in "A" match column "1" val

By : Mounica
Date : March 29 2020, 07:55 AM
wish of those help Ad far as I can tell, you want to delete from one table if there are no corresponding values in the other. This strongly suggests not exists (regardless of the database).
As best that I can parse your description:
code :
delete from a
    where not exists (select 1
                      from b
                      where b.col1 = a.col1 and b.col2 = a.col2

Perl errors: Can't use string (" ") as a HASH ref while "strict refs" in use at Test.pl line "n

By : pavani gajarla
Date : March 29 2020, 07:55 AM
this one helps. I'm currently working on a script which takes a file as an input. The input file looks like this: , Replace the line
code :
foreach $sample_nm (values %{$hash_geno_group{%{$sample_geno_group}{"sample"}}}){
foreach $sample_nm (@{$hash_geno_group{$sample_geno_group}{"sample"}}){

Cassandra Error: Clustering column "domain" cannot be restricted (preceding column "timestamp" is re

By : PKM
Date : March 29 2020, 07:55 AM
will be helpful for those in need Important to note, but with Cassandra you need to take a query-centric approach to data modeling. Essentially, if this is the query you need to support:
code :
SELECT id, comment, language, location, section, domain, type, user, timestamp 
    FROM comments WHERE domain=? AND timestamp >= ? AND  timestamp <= ?;
PRIMARY KEY (domain, timestamp, user, section, id))

Where must "use strict" be set to trigger strict-mode errors on frozen objects?

By : Ambuj Chandra
Date : March 29 2020, 07:55 AM
this one helps. Since ES5 we can use Object.freeze() to lock objects. ,
Scope where object was created originally.
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