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How do I delete rows in a data frame?
... may change in the future. A general principle of a data.frame or database tables is that the order of the rows should not matter. If the order does matter, this should be encoded in an actual variable in the data.frame.
For example, imagine you imported a dataset and deleted rows by numeric posi...
Count Rows in Doctrine QueryBuilder
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The most portable way is to do $qb->select($qb->expr()->count('account.id'))
– webbiedave
May 23 '16 at 22:04
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How to center text vertically with a large font-awesome icon?
... if you are using block elements. If you're using inline, inline-block, or table-cell, you should be good. MDN: vertical-align
– rinogo
Oct 30 '17 at 18:58
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Does IE9 support console.log, and is it a real function?
...roupEnd', 'info', 'log',
'markTimeline', 'profile', 'profileEnd', 'table', 'time', 'timeEnd',
'timeStamp', 'trace', 'warn'
];
var length = methods.length;
var console = (window.console = window.console || {});
while (length--) {
method = methods[length];
...
Do I need to heartbeat to keep a TCP connection open?
...e (such as a firewall), you may need keepalives in order to keep the state table entry from expiring.
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How to get a list of current open windows/process with Java?
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but it is not showing the jar name. My executable jar name is helloDemo.jar. but it is not showing anything for it
– Sumon Bappi
May 2 '15 at 10:57
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alternatives to REPLACE on a text or ntext datatype
I need to update/replace the data in datatable.column. The table has a field named Content . I'm using the REPLACE function. Since the column datatype is NTEXT , SQL Server doesn't allow me to use the REPLACE function.
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Check if page gets reloaded or refreshed in JavaScript
...type
This is an experimental technology.
Check the Browser compatibility table carefully before using this in production.
Support on 2019-07-08
The type read-only property returns a string representing the type of navigation. The value must be one of the following:
navigate — Navigation st...
Most efficient T-SQL way to pad a varchar on the left to a certain length?
...on cleaner, it is not very efficient in terms of execution time. The Tally table I used has 64,000 records. Kudos to Martin Smith for pointing out execution time efficiency.
SET STATISTICS TIME ON
select FORMAT(N, 'd10') as padWithZeros from Tally
SET STATISTICS TIME OFF
SQL Server Execution Tim...
how to replicate pinterest.com's absolute div stacking layout [closed]
...e same script in jQuery, with the slight difference of actually creating a table with 1 row and N columns, and just appending them to the shortest column from left to right priority. Even though I also added a "Minimum height difference" Constant required to actually skip a column when positioning ...