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What is the recommended batch size for SqlBulkCopy?
...ts them into a database using SQLBulkCopy. A typical file has about 6M qualified rows, averaging 5 columns of decimal and short text, about 30 bytes per row.
Given this scenario, I found a batch size of 5,000 to be the best compromise of speed and memory consumption. I started with 500 and experim...
How to split a file into equal parts, without breaking individual lines? [duplicate]
I was wondering if it was possible to split a file into equal parts ( edit: = all equal except for the last), without breaking the line? Using the split command in Unix, lines may be broken in half. Is there a way to, say, split up a file in 5 equal parts, but have it still only consist of whole li...
Location of my.cnf file on macOS
...vides example configuration files at /usr/local/mysql/support-files/.
And if you can't find them there, MySQLWorkbench can create them for you by:
Opening a connection
Selecting the 'Options File' under 'INSTANCE' in the menu.
MySQLWorkbench will search for my.cnf and if it can't find it, it'll c...
java: Class.isInstance vs Class.isAssignableFrom
...
Technicality: If obj is null then clazz.isAssignableFrom(obj.getClass()) == clazz.isInstance(obj) will throw a NullPointerException and not return true.
– Andrew Macheret
Apr 23 '18 at 22:14
...
Difference between “@id/” and “@+id/” in Android
...efined/created in your project, you use @id/..
More Info
As per your clarifications in the chat, you said you have a problem like this :
If we use android:id="@id/layout_item_id" it doesn't work. Instead @+id/ works so what's the difference here? And that was my original question.
Well, it...
Placing Unicode character in CSS content value [duplicate]
.../serve the CSS file as UTF-8?
nav a:hover:after {
content: "↓";
}
If that's not good enough, and you want to keep it all-ASCII:
nav a:hover:after {
content: "\2193";
}
The general format for a Unicode character inside a string is \000000 to \FFFFFF – a backslash followed by six hex...
How to remove part of a string? [closed]
...
If you're specifically targetting "11223344", then use str_replace:
// str_replace($search, $replace, $subject)
echo str_replace("11223344", "","REGISTER 11223344 here");
...
Get names of all keys in the collection
...ooks related to the history mechanism because I get things which I have modified in the past..
– Shawn
Sep 26 '11 at 2:54
3
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ALTER TABLE to add a composite primary key
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ALTER TABLE provider ADD PRIMARY KEY(person,place,thing);
If a primary key already exists then you want to do this
ALTER TABLE provider DROP PRIMARY KEY, ADD PRIMARY KEY(person, place, thing);
share
...
Servlet returns “HTTP Status 404 The requested resource (/servlet) is not available”
...ch as the server itself. This way you eliminiate potential environment-specific problems. Packageless servlets work only in specific Tomcat+JDK combinations and this should never be relied upon.
In case of a "plain" IDE project, the class needs to be placed in its package structure inside "Java Re...