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Performance surprise with “as” and nullable types
I'm just revising chapter 4 of C# in Depth which deals with nullable types, and I'm adding a section about using the "as" operator, which allows you to write:
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Oracle SQL: Update a table with data from another table
...n = (select...)
never worked for me since set only expects 1 value - SQL Error: ORA-01427: single-row subquery returns more than one row.
here's the solution:
BEGIN
For i in (select id, name, desc from table1)
LOOP
Update table2 set name = i.name, desc = i.desc where id = i.id;
END LOOP;
END;
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How do you get git to always pull from a specific branch?
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I just tried this, and I get the error fatal: Not a valid object name: 'origin/master'. even though origin is a valid remote, and master exists, as per usual, in both repos.
– Ken Williams
Apr 6 '12 at 14:00
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How can I run dos2unix on an entire directory? [closed]
...d . -type f -exec dos2unix {} /home/venuk/Desktop/NEO_Src and it gave the error find: missing argument to `-exec'
– Vivek Gaur
Aug 13 '12 at 7:05
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How to elegantly ignore some return values of a MATLAB function?
...e , isn't optional. Just typing [~ ~ var] will not work, and will throw an error.
See the release notes for details.
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Downcasting in Java
Upcasting is allowed in Java, however downcasting gives a compile error.
11 Answers
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Correct way to detach from a container without stopping it
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it returns me: Error response from daemon: Container f560a0ad6806150b2775d0b6e6d5f7065a03775bae858fb4fb7df05a277976db is not running
– Webwoman
Mar 1 '19 at 13:27
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Why does Node.js' fs.readFile() return a buffer instead of string?
... data.length)
Asynchronously:
fs.readFile('test.txt', 'utf8', function (error, data) {
if (error) throw error;
console.log(data.toString());
});
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How come a non-const reference cannot bind to a temporary object?
...ld get at the modified value anyway. He says that this, most likely, is an error.
– sbi
Oct 14 '09 at 16:56
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libxml/tree.h no such file or directory
I am getting following errors.
22 Answers
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