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How do you round to 1 decimal place in Javascript?
...nded.toFixed(1)
// fixed is always to 1 d.p.
// NOTE: .toFixed() returns a string!
// To convert back to number format
parseFloat(number.toFixed(2))
// 12.34
// but that will not retain any trailing zeros
// So, just make sure it is the last step before output,
// and use a number format during ca...
Awk学习笔记 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...候。格式如下：
sub (regular expression, substitution string):
sub (regular expression, substitution string, target string)
实例：
$ awk '{ sub(/test/, "mytest"); print }' testfile
$ awk '{ sub(/test/, "mytest"); $1}; print }' testf...
C# How can I check if a URL exists/is valid?
...nt()) {
client.HeadOnly = true;
// fine, no content downloaded
string s1 = client.DownloadString("http://google.com");
// throws 404
string s2 = client.DownloadString("http://google.com/silly");
}
You would try/catch around the DownloadString to check for errors; no error? It e...
Format an Integer using Java String Format
I am wondering if it is possible, using the String.format method in Java, to give an integer preceding zeros?
3 Answers
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How to quickly and conveniently create a one element arraylist [duplicate]
...onstruct an ArrayList and the fixed-sizeList like
return new ArrayList<String>(Arrays.asList(s));
and (in Java 7+) you can use the diamond operator <> to make it
return new ArrayList<>(Arrays.asList(s));
Single Element List
Collections can return a list with a single elemen...
MySQL search and replace some text in a field
...REPLACE(field, 'foo', 'bar') WHERE INSTR(field, 'foo') > 0;
REPLACE (string functions)
INSTR (string functions)
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Remove non-numeric characters (except periods and commas) from a string
...non-numeric characters and the comma and period/full stop as follows:
$testString = '12.322,11T';
echo preg_replace('/[^0-9,.]+/', '', $testString);
The pattern can also be expressed as /[^\d,.]+/
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Is there any method to get the URL without query string?
... a completely sanitized URL. He asked specifically for a url with no query string, and this answer delivers exactly that. The same URL, with the query string removed.
– Drew Major
Mar 15 '18 at 18:46
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How to count instances of character in SQL Column
I have an sql column that is a string of 100 'Y' or 'N' characters. For example:
16 Answers
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Save string to the NSUserDefaults?
How to save a string into the NSUserDefaults ?
15 Answers
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