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Postgres: How to do Composite keys?
... NULL,
tag_id SERIAL NOT NULL,
tag1 VARCHAR(20),
tag2 VARCHAR(20),
tag3 VARCHAR(20),
PRIMARY KEY(question_id, tag_id)
);
NOTICE: CREATE TABLE will create implicit sequence "tags_tag_id_seq" for serial column "tags.tag...
How to create a new file together with missing parent directories?
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answered Jun 22 '10 at 6:32
Jon SkeetJon Skeet
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Remove an Existing File from a Git Repo
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edited Nov 9 '10 at 17:50
answered Nov 8 '10 at 16:44
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How to get index in Handlebars each helper?
...elper.
snippet from : https://github.com/wycats/handlebars.js/issues/250#issuecomment-9514811
The index of the current array item has been available for some time now via @index:
{{#each array}}
{{@index}}: {{this}}
{{/each}}
For object iteration, use @key instead:
{{#each object}}
...
How to make a div grow in height while having floats inside
...: auto;
background: silver;
}
.float {
float: left;
width: 40%;
background: white;
margin: 0 1%;
}
<div class="wrap">
<div class="float">Cras mattis iudicium purus sit amet fermentum. At nos hinc posthac, sitientis piros Afros. Qui ipsorum lingua Celtae, nostra ...
Add a space (“ ”) after an element using :after
...ne boxes.
And from The 'white-space' processing model,
If a space (U+0020) at the end of a line has 'white-space' set to
'normal', 'nowrap', or 'pre-line', it is also removed.
Solution
So if you don't want the space to be removed, set white-space to pre or pre-wrap.
h2 {
text-deco...
Command line: piping find results to rm
... you should correct for that:
find -type f -name '*.sql' -mtime +15 -print0 | xargs -0 rm
But actually, find has a shortcut for this: the -delete option:
find -type f -name '*.sql' -mtime +15 -delete
Please be aware of the following warnings in man find:
Warnings: Don't forget that the f...
UITableViewHeaderFooterView: Unable to change background color
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Eclipse: Can you format code on save?
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205
Under Preferences, choose Java --> Editor --> Save Actions. Check the Perform the select...
How to check if an array field contains a unique value or another array in MongoDB?
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220
Try this out:
db.blogpost.find({ 'tags' : 'tag1'}); //1
db.blogpost.find({ 'tags' : { $all : [ ...