大约有 6,000 项符合查询结果（耗时：0.0266秒） [XML]
Round to at most 2 decimal places (only if necessary)
...
If the value is a text type:
parseFloat("123.456").toFixed(2);
If the value is a number:
var numb = 123.23454;
numb = numb.toFixed(2);
There is a downside that values like 1.5 will give "1.50" as the output. A fix suggested by @minitech:
var numb = 1.5;
numb = +nu...
How do you stop MySQL on a Mac OS install?
...starting from the MySQL System Preferences panel.
– Ross Henderson
Apr 16 '11 at 1:00
4
In my cas...
VBoxManage: error: Failed to create the host-only adapter
... should now be able to run vagrant up or vagrant reload and have your new host configured.
As mentioned in this answer, recent versions of macOS can block VirtualBox.
Solution:
Go to System Preferences > Security & Privacy Then hit the "Allow" button to let Oracle (VirtualBox) load.
...
An error occurred while validating. HRESULT = '8000000A'
...
123
Update for those who got this issue for VS2013 or VS2015 after upgrading a VS200X setup projec...
How to repeat a string a variable number of times in C++?
...
std::string(5, '.')
This is a contrived example of how you might use an ostringstream to repeat a string n times:
#include <sstream>
std::string repeat(int n) {
std::ostringstream os;
for(int i = 0; i < n; i++)
os << "repeat";
return os.str();
}
Depending on...
Can I redirect the stdout in python into some sort of string buffer?
...start
out = sys.stdout.read() # read output
# restore stdout
sys.stdout.close()
sys.stdout = old_stdout
This solution works for Python 2 >= 2.6 and Python 3.
Please note that our new sys.stdout.write() only accepts unicode strings and sys.stdout.buffer.write() only accepts byte strings.
This ...
Why does Android use Java? [closed]
...o Java was known in the industry
the speed difference is not an issue for most applications; if it was you should code in low-level language
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fo...
How do I find the location of Python module sources?
...swer to indicate that datetime.__file__ points to a .so on Linux & Mac OS X (though on Windows the datetime module object has no file attribute), I'll accept your answer.
– Daryl Spitzer
Nov 6 '08 at 19:06
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What's the best way to check if a String represents an integer in Java?
...they aren't bad performers.
public void RunTests()
{
String str = "1234567890";
long startTime = System.currentTimeMillis();
for(int i = 0; i < 100000; i++)
IsInt_ByException(str);
long endTime = System.currentTimeMillis();
System.out.print("ByException: ");
...
How to get evaluated attributes inside a custom directive
...32;
}
.
<div ng-controller="MyCtrl">
<input my-directive="123">
<input my-directive="1+1">
<input my-directive="'1+1'">
<input my-directive="aaa">
</div>
One thing you should notice here is that, if you want set the val...