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How to check status of PostgreSQL server Mac OS X
...using psql to run a simple query and checking the exit code, e.g. psql -c 'SELECT 1', or use pg_isready to check the connection status.
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Having a private branch of a public repo on GitHub?
...repo?
On GitHub, your repository is either public or private; you cannot selectively "privatize" just a branch.
Can I fork my own public repo into my own private branch/fork?
You can clone your public repo to your local machine, branch as needed, and simply not push your "private" branches u...
Best way to do Version Control for MS Excel
...to run these macros. In the code viewer, right click on "ThisWorkbook" and select "View Code". You may have to pull down the select box at the top of the code window to change from "(General)" view to "Workbook" view.
Contents of "Workbook" view:
Private Sub Workbook_Open()
ImportCodeModules
End...
How to get the part of a file after the first line that matches a regular expression?
...it, -e indicated a script to sed, /TERMINATE/,$ is an address (line) range selection meaning the first line matching the TERMINATE regular expression (like grep) to the end of the file ($), and p is the print command which prints the current line.
This will print from the line that follows the line...
How to define a custom ORDER BY order in mySQL
...in the order you specify.
The second will involve a case somewhere, i.e.
SELECT * FROM table
ORDER BY CASE Language
WHEN 'ENU' THEN 3
WHEN 'JPN' THEN 2
WHEN 'DAN' THEN 1
ELSE 0
END DESC, ID ASC
Performance-wise the ENUM method will return faster results, but be more hassle if you...
How to Correctly Use Lists in R?
...dresses the question of the difference between [] and [[]].
In short [[]] selects a single item from a list and [] returns a list of the selected items. In your example, x = list(1, 2, 3, 4)' item 1 is a single integer but x[[1]] returns a single 1 and x[1] returns a list with only one value.
>...
How to comment a block in Eclipse?
...Ctrl+Shift+c
Uncomment: Ctrl+Shift+c
For Multiple Lines (Toggle Effect)
(Select the lines you want to comment)
comment : Ctrl+Shift+c
Uncomment: Ctrl+Shift+c
It is for all html , css , jsp , java .
It gives toggle effect.
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anchor jumping by using javascript
... element. If you want to get the first element out from your query, do $(mySelector)[0].scrollIntoView().
– Derek 朕會功夫
Jun 8 '18 at 12:48
4
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Pagination on a list using ng-repeat
...l="q" id="search" class="form-control" placeholder="Filter text">
<select ng-model="pageSize" id="pageSize" class="form-control">
<option value="5">5</option>
<option value="10">10</option>
<option value="15">15</option>
...
How to write a Unit Test?
...l,calculatedVal).
Test your method by running it (in Eclipse, right click, select Run as → JUnit test).
//for normal addition
@Test
public void testAdd1Plus1()
{
int x = 1 ; int y = 1;
assertEquals(2, myClass.add(x,y));
}
Add other cases as desired.
Test that your binary sum doe...