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Filter data.frame rows by a logical condition
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To select rows according to one 'cell_type' (e.g. 'hesc'), use ==:
expr[expr$cell_type == "hesc", ]
To select rows according to two or more different 'cell_type', (e.g. either 'hesc' or 'bj fibroblast'), use %in%:
expr[expr$...
How to solve “The specified service has been marked for deletion” error
...ing state. The following procedure worked for me:
open task manager > select services tab > select the service > right click and select "go to process" > right click on the process and select End process
Service should be gone after that
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How can you do paging with NHibernate?
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This performs a SELECT TOP query in SQL Server. Try it with SetFirstResult(1).SetMaxResult(2);
– Chris S
Feb 8 '09 at 17:02
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Postgresql query between date ranges
... things become simpler if you use >= start AND < end.
For example:
SELECT
user_id
FROM
user_logs
WHERE
login_date >= '2014-02-01'
AND login_date < '2014-03-01'
In this case you still need to calculate the start date of the month you need, but that should be straight forw...
MySQL with Node.js
....log('connected as id ' + connection.threadId);
connection.query("select * from user",function(err,rows){
connection.release();
if(!err) {
res.json(rows);
}
});
connection.on('error', function(err) {
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Where do I set my company name?
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In xCode 7.3 (edit: till 11.3.1) just select top project file and Look in Utilities on Left pane
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Maven: Failed to read artifact descriptor
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Had the same issue with IntelliJ IDEA and following worked.
Go to File
Select Settings
Select Build, Execution, Deployments
Select Build Tools from drop down
Select Maven from drop down
Tick the Always update snapshots check box
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Could not load file or assembly 'System.Data.SQLite'
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@Raul Vejar: please elaborate on how application pool selection feature of IIS Express solves the 32-bit/64-bit assembly issue. Thanks
– Tim
Aug 5 '14 at 17:00
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Can I write into the console in a unit test? If yes, why doesn't the console window open?
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In V2017 (Community), go to "test explorer", select the test result item in the list, then click on the link "output" on the other window (test result window?). Since it will probably be truncated, use the "copy all" and past somewhere else.
– heri...
Populate data table from data reader
... conn = new SqlConnection(connString);
string query = "SELECT * FROM Customers";
SqlCommand cmd = new SqlCommand(query, conn);
conn.Open();
SqlDataReader dr = cmd.ExecuteReader(CommandBehavior.CloseConnection);
DataTable dtSchema = ...