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How to get the unix timestamp in C#
...estamp in C# by using DateTime.UtcNow and subtracting the epoch time of 1970-01-01.
e.g.
Int32 unixTimestamp = (Int32)(DateTime.UtcNow.Subtract(new DateTime(1970, 1, 1))).TotalSeconds;
DateTime.UtcNow can be replaced with any DateTime object that you would like to get the unix timestamp for.
Th...
difference between socket programming and Http programming
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answered Feb 27 '13 at 10:48
jgauffinjgauffin
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&& (AND) and || (OR) in IF statements
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206
No, it will not be evaluated. And this is very useful. For example, if you need to test whether...
MySQL show current connection info
...ther useful functions can be found here: http://dev.mysql.com/doc/refman/5.0/en/information-functions.html
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How to set the value to a cell in Google Sheets using Apps Script?
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220
The following code does what is required
function doTest() {
SpreadsheetApp.getActiveSheet()....
Pandas get topmost n records within each group
...
>>> df.groupby('id').head(2)
id value
id
1 0 1 1
1 1 2
2 3 2 1
4 2 2
3 7 3 1
4 8 4 1
(Keep in mind that you might need to order/sort before, depending on your data)
EDIT: As mentioned by the questioner, use df.gro...
Get pandas.read_csv to read empty values as empty string instead of nan
...d an option of some sort here:
https://github.com/pydata/pandas/issues/1450
In the meantime, result.fillna('') should do what you want
EDIT: in the development version (to be 0.8.0 final) if you specify an empty list of na_values, empty strings will stay empty strings in the result
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Storing R.drawable IDs in XML array
... within your /res/values folder that looks like this:
<?xml version="1.0" encoding="utf-8"?>
<resources>
<integer-array name="random_imgs">
<item>@drawable/car_01</item>
<item>@drawable/balloon_random_02</item>
<item>@draw...
Valid to use (anchor tag) without href attribute?
...n, you should add the following attributes:
<a role="button" tabindex="0" ...>...</a>
The button role tells the user that the particular element is being treated as a button as an override for whatever semantics the underlying element may have had.
For <span> and <div> el...
Can you have a within a ?
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304
HTML4 specification states that:
Inline elements may contain only data and other inline ele...