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How to specialize std::hash::operator() for user-defined type in unordered containers?
... slap them on the wrists already at the stage where their class contains a char*!
– Kerrek SB
Nov 16 '11 at 22:12
Hmm....
HTML5 Canvas vs. SVG vs. div
...ample, let's say I want to create a rectangle, circle and polygon and then select those objects and move them around.
8 Ans...
How to modify a pull request on GitHub to change target branch to merge into?
...e new pull request in their dashboard the next time they sign in.
If you select as a base branch the one that the original maintainer (the owner) wants, your PR should merge from your branch (unchanged) to the new base branch.
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How to detect input type=file “change” for the same file?
I want to fire an event when the user select a file. Doing so with .change event it works if the user changes the file every time.
...
How to split text without spaces into list of words?
...a string
without spaces."""
# Find the best match for the i first characters, assuming cost has
# been built for the i-1 first characters.
# Returns a pair (match_cost, match_length).
def best_match(i):
candidates = enumerate(reversed(cost[max(0, i-maxword):i]))
...
How to get database structure in MySQL via query
...CHEMA.TABLES table. It contains metadata about all your tables.
Example:
SELECT * FROM `INFORMATION_SCHEMA`.`TABLES`
WHERE TABLE_NAME LIKE 'table1'
The advantage of this over other methods is that you can easily use queries like the one above as subqueries in your other queries.
...
How do I specify a password to 'psql' non-interactively?
...ORD="$(pbpaste)" --rm postgres psql -h www.example.com dbname username -c 'SELECT * FROM table;'
– Bilal Akil
Nov 23 '17 at 4:34
3
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Case conventions on element names?
...inent examples:
<a>1</a><b>1</b>
<xsl:value-of select="a+b"/>
outputs 2, as expected
<a>1</a><b>1</b>
<xsl:value-of select="a-b"/>
DOES NOT ERROR, BUT OUTPUTS NOTHING AT ALL
In the above code, you must put at least one space before a su...
Export Postgresql table data using pgAdmin
...
Just right click on a table and select "backup". The popup will show various options, including "Format", select "plain" and you get plain SQL.
pgAdmin is just using pg_dump to create the dump, also when you want plain SQL.
It uses something like this: ...
Is it possible to GROUP BY multiple columns using MySQL?
Is it possible to GROUP BY more than one column in a MySQL SELECT query? For example:
7 Answers
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