大约有 42,000 项符合查询结果（耗时：0.0629秒） [XML]
Is it okay to use now?
I'm working on a mobile phone web app and I have several text fields that could benefit from <input type="tel"/> . iPhones will adjust the keyboard for the user, but I'm worried about breaking backwards compatibility. What I'm hoping is that browsers/phone that support this can assist the use...
What is the syntax for “not equal” in SQLite?
... Feb 21 '12 at 22:32
Graham BorlandGraham Borland
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Generating random strings with T-SQL
If you wanted to generate a pseudorandom alphanumeric string using T-SQL, how would you do it? How would you exclude characters like dollar signs, dashes, and slashes from it?
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SQL Query to concatenate column values from multiple rows in Oracle
..., which works on versions prior to 11.2. Because WM_CONCAT is undocumented and unsupported by Oracle, it's recommended not to use it in production system.
With XMLAGG you can do the following:
SELECT XMLAGG(XMLELEMENT(E,ename||',')).EXTRACT('//text()') "Result"
FROM employee_names
What this doe...
How to list the properties of a JavaScript object?
...call .keys() on any object. Extending the prototype has some side effects and I wouldn't recommend doing it.
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How to install CocoaPods?
I referred too many links and tried, but had no success. If any one has an idea then please please share with me. I read cocoa pods documents and many times tried to install but always failed because of the starting steps. I found one error whereby I can't install gems first. Can anyone give me the ...
dispatch_after - GCD in Swift?
I've gone through the iBook from Apple, and couldn't find any definition of it:
24 Answers
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ALTER TABLE, set null in not null column, PostgreSQL 9.1
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Execute the command in this format
ALTER TABLE tablename ALTER COLUMN columnname SET NOT NULL;
for setting the column to not null.
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How to enable external request in IIS Express?
...IIS Express. Here is the pertinent part of that post summarized:
On Vista and Win7, run the following command from an administrative prompt:
netsh http add urlacl url=http://vaidesg:8080/ user=everyone
For XP, first install Windows XP Service Pack 2 Support Tools. Then run the following command fro...
Generate array of all letters and digits
Using ruby, is it possible to make an array of each letter in the alphabet and 0-9 easily?
7 Answers
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