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Increment a value in Postgres
...table 'totals' had 2 columns, 'name' and 'total', and Bill had a total of 203, what would be the SQL statement I'd use in order to move Bill's total to 204?
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Default html form focus without JavaScript
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jpaugh
5,45044 gold badges3232 silver badges7979 bronze badges
answered Nov 12 '10 at 16:05
Jake LucasJake Lucas...
Append to a file in Go
... Go1:
f, err := os.OpenFile(filename, os.O_APPEND|os.O_WRONLY|os.O_CREATE, 0600)
if err != nil {
panic(err)
}
defer f.Close()
if _, err = f.WriteString(text); err != nil {
panic(err)
}
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Git Gui: Perpetually getting “This repository currently has approximately 320 loose objects.”
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edited Jun 20 at 9:12
Community♦
111 silver badge
answered Jan 30 '14 at 13:53
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Measuring function execution time in R
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10 Answers
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is of a type that is invalid for use as a key column in an index
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A unique constraint can't be over 8000 bytes per row and will only use the first 900 bytes even then so the safest maximum size for your keys would be:
create table [misc_info]
(
[id] INTEGER PRIMARY KEY IDENTITY NOT NULL,
[key] nvarchar(450) UNIQUE...
How to change ViewPager's page?
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answered Sep 16 '11 at 14:40
Mark AllisonMark Allison
21.2k88 gold badges4242 silver badges4545 bronze badges
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Pandas timeseries plot setting x-axis major and minor ticks and labels
...lib.pyplot as plt
import matplotlib.dates as dates
idx = pd.date_range('2011-05-01', '2011-07-01')
s = pd.Series(np.random.randn(len(idx)), index=idx)
fig, ax = plt.subplots()
ax.plot_date(idx.to_pydatetime(), s, 'v-')
ax.xaxis.set_minor_locator(dates.WeekdayLocator(byweekday=(1),
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How to set up a git project to use an external repo submodule?
...ares them to Subversion's svn:externals mechanism: http://speirs.org/blog/2009/5/11/understanding-git-submodules.html
* As a best practice, you should always place your submodules in their own directory, such as Externals. If you don't, your root project directory can become very cluttered very f...
Refresh a page using PHP
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You can do it with PHP:
header("Refresh:0");
It refreshes your current page, and if you need to redirect it to another page, use following:
header("Refresh:0; url=page2.php");
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