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Why does Haskell's “do nothing” function, id, consume tons of memory?
Haskell has an identity function which returns the input unchanged. The definition is simple:
1 Answer
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Do htmlspecialchars and mysql_real_escape_string keep my PHP code safe from injection?
Earlier today a question was asked regarding input validation strategies in web apps .
6 Answers
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How to COUNT rows within EntityFramework without loading contents?
...y syntax:
var count = (from o in context.MyContainer
where o.ID == '1'
from t in o.MyTable
select t).Count();
Method syntax:
var count = context.MyContainer
.Where(o => o.ID == '1')
.SelectMany(o => o.MyTable)
.Coun...
Place cursor at the end of text in EditText
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Try this:
EditText et = (EditText)findViewById(R.id.inbox);
et.setSelection(et.getText().length());
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Comparing mongoose _id and strings
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Mongoose uses the mongodb-native driver, which uses the custom ObjectID type. You can compare ObjectIDs with the .equals() method. With your example, results.userId.equals(AnotherMongoDocument._id). The ObjectID type also has a toString() method, if you wish to store a stringified version of t...
Linq to Entities join vs groupjoin
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Behaviour
Suppose you have two lists:
Id Value
1 A
2 B
3 C
Id ChildValue
1 a1
1 a2
1 a3
2 b1
2 b2
When you Join the two lists on the Id field the result will be:
Value ChildValue
A a1
A a2
A a3
B b1
B b2
When you GroupJoin...
mysql :: insert into table, data from another table?
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INSERT INTO action_2_members (campaign_id, mobile, vote, vote_date)
SELECT campaign_id, from_number, received_msg, date_received
FROM `received_txts`
WHERE `campaign_id` = '8'
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Sort objects in an array alphabetically on one property of the array
... least remember the linting thing :)
– Michael Tranchida
May 18 '18 at 22:40
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Confirm deletion in modal / dialog using Twitter Bootstrap?
...ant to have delete confirmation for:
<a href="#" data-href="delete.php?id=23" data-toggle="modal" data-target="#confirm-delete">Delete record #23</a>
<button class="btn btn-default" data-href="/delete.php?id=54" data-toggle="modal" data-target="#confirm-delete">
Delete record...
Which SQL query is faster? Filter on Join criteria or Where clause?
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SELECT *
FROM TableA a
LEFT JOIN
TableXRef x
ON x.TableAID = a.ID
AND a.ID = 1
LEFT JOIN
TableB b
ON x.TableBID = b.ID
or this:
SELECT *
FROM TableA a
LEFT JOIN
TableXRef x
ON x.TableAID = a.ID
LEFT JOIN
TableB b
ON b.id = x.Ta...