大约有 23,000 项符合查询结果（耗时：0.0609秒） [XML]
In Objective-C, how do I test the object type?
I need to test whether the object is of type NSString or UIImageView . How can I accomplish this? Is there some type of "isoftype" method?
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How to convert all text to lowercase in Vim
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& is a stand-in for the matched string. So \U& capitalizes the matched string so that it may be used for the replacement.
– Alec Jacobson
Oct 2 '14 at 13:56
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ArithmeticException: “Non-terminating decimal expansion; no exact representable decimal result”
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Answer for BigDecimal throws ArithmeticException
public static void main(String[] args) {
int age = 30;
BigDecimal retireMentFund = new BigDecimal("10000.00");
retireMentFund.setScale(2,BigDecimal.ROUND_HALF_UP);
BigDecimal yearsInRetirement = new BigDecimal("20.00"...
How to make a phone call programmatically?
...w Intent(Intent.ACTION_CALL);
intent.setData(Uri.parse("tel:" + bundle.getString("mobilePhone")));
context.startActivity(intent);
An intent by itself is simply an object that describes something. It doesn't do anything.
Don't forget to add the relevant permission to your manifest:
<uses-perm...
How do you redirect HTTPS to HTTP?
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I think you might also want to catch query strings. I'm not sure, but I think the above snippet will not forward query strings from https to http.
– Rustavore
May 14 '13 at 22:22
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Best cross-browser method to capture CTRL+S with JQuery?
...unction(event) {
if (event.ctrlKey || event.metaKey) {
switch (String.fromCharCode(event.which).toLowerCase()) {
case 's':
event.preventDefault();
alert('ctrl-s');
break;
case 'f':
event.preventDefault();
alert('...
Remove DEFINER clause from MySQL Dumps
...editor and replace all occurrences of DEFINER=root@localhost with an empty string ""
Edit the dump (or pipe the output) using perl:
perl -p -i.bak -e "s/DEFINER=\`\w.*\`@\`\d[0-3].*[0-3]\`//g" mydatabase.sql
Pipe the output through sed:
mysqldump ... | sed -e 's/DEFINER[ ]*=[ ]*[^*]*\*/\*/' > ...
The server committed a protocol violation. Section=ResponseStatusLine ERROR
I have created a program, tried to post a string on a site and I get this error:
17 Answers
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Remove blank lines with grep
...explain. For instance your regular expression matches the beginning of the string then one or more spaces using the POSIX standard then the end of the string, i.e. with grep -v it removes all lines that are only spaces. Right? What happens if there are no spaces; it's simply a newline character?
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Convert a date format in PHP
... date function requires a timestamp, and I can't get a timestamp from this string.
17 Answers
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