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SQL order string as number
... | 0 /* the string does not contain a number, so the result is 0 */
'123miles' | 123
'$123' | 0 /* the left side of the string does not start with a number */
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How are echo and print different in PHP? [duplicate]
...and a ", 1, 2, 3; // comma-separated without parentheses
echo ("and a 123"); // just one parameter with parentheses
print() can only take one parameter:
print ("and a 123");
print "and a 123";
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Removing numbers from string [closed]
...ng/regular expressions:
For Python 2:
from string import digits
s = 'abc123def456ghi789zero0'
res = s.translate(None, digits)
# 'abcdefghizero'
For Python 3:
from string import digits
s = 'abc123def456ghi789zero0'
remove_digits = str.maketrans('', '', digits)
res = s.translate(remove_digits)
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Convert Long into Integer
...
Here are three ways to do it:
Long l = 123L;
Integer correctButComplicated = Integer.valueOf(l.intValue());
Integer withBoxing = l.intValue();
Integer terrible = (int) (long) l;
All three versions generate almost identical byte code:
0 ldc2_w <Long 123>...
Django set default form values
... value when calling form constructor:
form = JournalForm(initial={'tank': 123})
or set the value in the form definition:
tank = forms.IntegerField(widget=forms.HiddenInput(), initial=123)
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Formatting a number with exactly two decimals in JavaScript
...); // Returns 1.27
This genericity also provides some cool stuff:
round(1234.5678, -2); // Returns 1200
round(1.2345678e+2, 2); // Returns 123.46
round("123.45"); // Returns 123
Now, to answer the OP's question, one has to type:
round(10.8034, 2).toFixed(2); // Returns "10.80"
round...
Sequelize.js delete query?
...'s a destroy() method you can call on a record, for example:
Project.find(123).on('success', function(project) {
project.destroy().on('success', function(u) {
if (u && u.deletedAt) {
// successfully deleted the project
}
})
})
...
Window Features - 更多技术 - 清泛网 - 专注C/C++及内核技术
Window FeaturesThis overview discusses features of windows such as window types, states, size, and position.Window TypesOverlapped...This overview discusses features of windows such as window types, states, size, and position.
Window Types
Overlapped Windows
Pop-up Windows
Child Windows
...
How can Bash execute a command in a different directory context?
... Using a subshell is a much better solution
– josh123a123
Apr 19 '16 at 14:31
For scripting, a subshell is probably...