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How do you install Boost on MacOS?
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if you prefer running things through root sudo -s /opt/local/bin/port install boost
– Pungs
Feb 12 '13 at 16:21
2
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How do I create a copy of an object in PHP?
...ing this, that cloning will keep reference to the original object. Running MySQL queries using the cloned object may have unpredictable results because of this, as execution may not take place in a linear fashion.
– Ælex
Mar 26 '13 at 16:30
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Good tool to visualise database schema? [closed]
...e any good tools for visualising a pre-existing database schema? I'm using MySQL if it matters.
20 Answers
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Explicit vs implicit SQL joins
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On MySQL 5.1.51, both queries have identical execution plans:
mysql> explain select * from table1 a inner join table2 b on a.pid = b.pid;
+----+-------------+-------+------+---------------+------+---------+--------------+---...
Is there any Rails function to check if a partial exists?
...e seen is that this will look in all view paths instead of just your rails root. This is important to me as I have a lot of rails engines.
This also works in Rails 4.
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Remove duplicate entries using a Bash script [duplicate]
...s. Interestingly enough the same record set took 15.1 seconds to perform a MySQL DISTINCT query on.
– Tegan Snyder
Feb 11 '16 at 19:13
1
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Comparing date ranges
In MySQL, If I have a list of date ranges (range-start and range-end). e.g.
10 Answers
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MongoDB Aggregation: How to get total records count?
...al' => array( '$sum' => 1 ), 'results' => array( '$push' => '$$ROOT' ) ),
// apply limit and offset
array('$project' => array( 'total' => 1, 'results' => array( '$slice' => array( '$results', $skip, $length ) ) ) )
))
Result will look something like this:
[
{
"_id"...
Detecting when user has dismissed the soft keyboard
...gleAction: (shown: Boolean) -> Unit): KeyboardToggleListener? {
val root = findViewById<View>(android.R.id.content)
val listener = KeyboardToggleListener(root, onKeyboardToggleAction)
return root?.viewTreeObserver?.run {
addOnGlobalLayoutListener(listener)
listen...
Checking a Python module version at runtime
... be that of PyPI entry. So something like "pkg_resources.get_distribution('MySQLdb').version" won't work but "pkg_resources.get_distribution('mysql-python').version" will.
– Rahul
Aug 21 '12 at 8:17
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