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How do I scroll to an element within an overflowed Div?
... that can only show 5 at a time. What is a good way to scroll to item #10, and then item #20? I know the height of all the items.
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XmlWriter to Write to a String Instead of to a File
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You need to create a StringWriter, and pass that to the XmlWriter.
The string overload of the XmlWriter.Create is for a filename.
E.g.
using (var sw = new StringWriter()) {
using (var xw = XmlWriter.Create(sw)) {
// Build Xml with xw.
}
return s...
How to include “zero” / “0” results in COUNT aggregate?
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You want an outer join for this (and you need to use person as the "driving" table)
SELECT person.person_id, COUNT(appointment.person_id) AS "number_of_appointments"
FROM person
LEFT JOIN appointment ON person.person_id = appointment.person_id
GROUP BY p...
Is it possible to have nested templates in Go using the standard library?
.../django-templates does. Is it possible using just html/template in the standard library.
5 Answers
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Is an index needed for a primary key in SQLite?
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It does it for you.
INTEGER PRIMARY KEY columns aside, both UNIQUE and PRIMARY KEY
constraints are implemented by creating an index in the database (in
the same way as a "CREATE UNIQUE INDEX" statement would). Such an
index is used like any other index in the database to optimize
que...
Replace tabs with spaces in vim
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IIRC, something like:
set tabstop=2 shiftwidth=2 expandtab
should do the trick. If you already have tabs, then follow it up with a nice global RE to replace them with double spaces.
share
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How to remove auto focus/keyboard popup of a field when the screen shows up?
I have a screen where the first field is an EditText, and it gains the focus at startup, also popups the numeric input type, which is very annoying
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How to set MSDN to be always in English
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I use Redirector for Chrome and have this: http([s]?):\/\/(docs|msdn)\.microsoft\.com\/es-es\/(.*) to http$1://$2.microsoft.com/en-us/$3
– Jcl
Jan 21 '18 at 20:00
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How to suppress Pandas Future warning ?
When I run the program, Pandas gives 'Future warning' like below every time.
3 Answers
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App Inventor 2 进制转换与位运算教程 - 十六进制、二进制、补码、字节操作...
...串左侧补零
四、位运算积木块
4.1 Bitwise And（按位与）
4.2 Bitwise Or (Inclusive)（按位或）
4.3 Bitwise Or (Exclusive / XOR)（按位异或）
4.4 位运算的组合应用：提取字节
五、补码（Two’s Complement）计算 ...