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How to set a value to a file input in HTML?
...ou can't.
The only way to set the value of a file input is by the user to select a file.
This is done for security reasons. Otherwise you would be able to create a JavaScript that automatically uploads a specific file from the client's computer.
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How do I change the data type for a column in MySQL?
...n type to another type, you can generate queries using a query like this:
select distinct concat('alter table ',
table_name,
' modify ',
column_name,
' <new datatype> ',
if(is_nu...
Convert array of integers to comma-separated string
...= new int[5] {1,2,3,4,5};
You can use Linq for it
String arrTostr = arr.Select(a => a.ToString()).Aggregate((i, j) => i + "," + j);
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Mercurial (hg) commit only certain files
...ke this:
$ hg commit -I foo.c -I "**/*.h"
You can even use a fileset to select the files you want to commit:
$ hg commit "set:size(1k - 1MB) and not binary()"
There is no setting that will turn off the auto-add behavior and make Mercurial work like Git does. However, the mq extension might be ...
Flatten List in LINQ
...
Try SelectMany()
var result = iList.SelectMany( i => i );
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How can I find out if I have Xcode commandline tools installed?
...u will get an alert. You can verify that you have installed it by
$ xcode-select -p
/Library/Developer/CommandLineTools
And to be sure then enter $ gcc --version
You can read more about the process here: Xcode command line tools for Mavericks
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How to disable HTML button using JavaScript?
...erence to the element collected through whatever means you like (e.g. querySelector)
– Quentin
Jun 27 '16 at 21:04
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Is there a rule-of-thumb for how to divide a dataset into training and validation sets?
...o training and validation (again, 80/20 is a fair split).
Subsample random selections of your training data, train the classifier with this, and record the performance on the validation set
Try a series of runs with different amounts of training data: randomly sample 20% of it, say, 10 times and obs...
How to uncheck a radio button?
...nt need the each function; you could just chain the removeAttr call to the selector.
– cjstehno
Jan 22 '10 at 13:55
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How to create a new database after initally installing oracle database 11g Express Edition?
...
In the Connections pane, click the icon New Connection.
The New/Select Database Connection window opens.
In the New/Select Database Connection window, type the appropriate
values in the fields Connection Name, Username, and Password.
For security, the password characters that ...