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PostgreSQL, checking date relative to “today”
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174
select * from mytable where mydate > now() - interval '1 year';
If you only care about th...
How to map and remove nil values in Ruby
... and I'd expect it to become the norm very soon.
For example:
numbers = [1, 2, 5, 8, 10, 13]
enum.filter_map { |i| i * 2 if i.even? }
# => [4, 16, 20]
In your case, as the block evaluates to falsey, simply:
items.filter_map { |x| process_x url }
"Ruby 2.7 adds Enumerable#filter_map" is a g...
Postgres manually alter sequence
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The parentheses are misplaced:
SELECT setval('payments_id_seq', 21, true); # next value will be 22
Otherwise you're calling setval with a single argument, while it requires two or three.
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Command to change the default home directory of a user
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edited Mar 20 at 17:04
fnkr
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answered Oc...
Rails migrations: Undo default setting for a column
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edited Nov 7 '18 at 23:48
Joshua Pinter
34k1717 gold badges188188 silver badges208208 bronze badges
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Any way to force strict mode in node?
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213
According to Lloyd you can now place
"use strict";
at the top of your file in node >= 0.1...
Unsigned keyword in C++
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91
From the link above:
Several of these types can be modified using the keywords signed, unsig...
How to change the default font size in ggplot2
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118
Use theme_set()
theme_set(theme_gray(base_size = 18))
qplot(1:10, 1:10)
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Specifying Maven's local repository location as a CLI parameter
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edited May 26 at 12:02
answered Aug 15 '11 at 23:01
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Unique constraint on multiple columns
...finition would be:
CREATE TABLE [dbo].[user](
[userID] [int] IDENTITY(1,1) NOT NULL,
[fcode] [int] NULL,
[scode] [int] NULL,
[dcode] [int] NULL,
[name] [nvarchar](50) NULL,
[address] [nvarchar](50) NULL,
CONSTRAINT [PK_user_1] PRIMARY KEY CLUSTERED
(
[userID...