大约有 47,000 项符合查询结果（耗时：0.0626秒） [XML]
How can we match a^n b^n with Java regex?
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+100
The answer is, needless to say, YES! You can most certainly write a Java regex pattern to match anbn. It uses a positive lookahead fo...
How do you specify a different port number in SQL Management Studio?
I am trying to connect to a Microsoft SQL 2005 server which is not on port 1433. How do I indicate a different port number when connecting to the server using SQL Management Studio?
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What is the order of precedence for CSS?
... TylerH
18.1k1212 gold badges6161 silver badges8080 bronze badges
answered Aug 3 '14 at 14:49
Lorenz MeyerLorenz Meyer
16.7k20...
Function to return only alpha-numeric characters from string?
...restricted to just A-Z.
Try this to remove everything except a-z, A-Z and 0-9:
$result = preg_replace("/[^a-zA-Z0-9]+/", "", $s);
If your definition of alphanumeric includes letters in foreign languages and obsolete scripts then you will need to use the Unicode character classes.
Try this to le...
Is there any way to use a numeric type as an object key?
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109
No, this is not possible. The key will always be converted to a string. See Property Accessor ...
Can I have an IF block in DOS batch file?
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The following sample code works fine for me:
@echo off
if ERRORLEVEL == 0 (
echo GP Manager is up
goto Continue7
)
echo GP Manager is down
:Continue7
Please note a few specific details about my sample code:
The space added between the end of the conditional statement, and the opening ...
How can I format a decimal to always show 2 decimal places?
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108
I suppose you're probably using the Decimal() objects from the decimal module? (If you need exa...
How to implement Rate It feature in Android App
... SharedPreferences prefs = mContext.getSharedPreferences("apprater", 0);
if (prefs.getBoolean("dontshowagain", false)) { return ; }
SharedPreferences.Editor editor = prefs.edit();
// Increment launch counter
long launch_count = prefs.getLong("launch_count", 0)...
Why aren't ◎ܫ◎ and ☺ valid JavaScript variable names?
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answered Sep 17 '11 at 0:15
Michael MadsenMichael Madsen
50.4k66 gold badges6666 silver badges8080 bronze badges
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Get local href value from anchor (a) tag
... points:
document.getElementById("aaa").href; // http://example.com/sec/IF00.html
while the one below gets the value of the href attribute:
document.getElementById("aaa").getAttribute("href"); // sec/IF00.html
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