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How do you clear a slice in Go?
...definition of 'clear'. One of the valid ones certainly is:
slice = slice[:0]
But there's a catch. If slice elements are of type T:
var slice []T
then enforcing len(slice) to be zero, by the above "trick", doesn't make any element of
slice[:cap(slice)]
eligible for garbage collection. This ...
MySQL remove all whitespaces from the entire column
...
203
To replace all spaces :
UPDATE `table` SET `col_name` = REPLACE(`col_name`, ' ', '')
To remo...
Add missing dates to pandas dataframe
...
270
You could use Series.reindex:
import pandas as pd
idx = pd.date_range('09-01-2013', '09-30-201...
How can I test that a value is “greater than or equal to” in Jasmine?
I want to confirm that a value is a decimal (or 0), so the number should be greater than or equal to zero and less than 1.
...
What is the difference between “px”, “dip”, “dp” and “sp”?
...sed on the physical density of the screen. These units are relative to a 160
dpi screen, so one dp is one pixel on a 160 dpi screen. The ratio of
dp-to-pixel will change with the screen density, but not necessarily
in direct proportion. Note: The compiler accepts both "dip" and
...
How to deal with SettingWithCopyWarning in Pandas?
I just upgraded my Pandas from 0.11 to 0.13.0rc1. Now, the application is popping out many new warnings. One of them like this:
...
How to quickly edit values in table in SQL Server Management Studio?
Aside from context menu -> "Edit Top 200 Rows" from Object Explorer, is there a quick way to open a table in Edit mode where I can just quickly modify the value of a cell?
...
Wait for a process to finish
...
+50
To wait for any process to finish
Linux:
tail --pid=$pid -f /dev/null
Darwin (requires that $pid has open files):
lsof -p $pid +r...
Invoke a callback at the end of a transition
...milar to jQuery) using D3.js . What I need to do is to set the opacity to 0 using transition() .
9 Answers
...
SQLite select where empty?
...ere coalesce(some_column, '') = ''
of
where ifnull(length(some_column), 0) = 0
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