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How can you use an object's property in a double-quoted string?
...-quoted string, you have to enclose that subexpression in $():
$foo = 1,2,3
"$foo[1]" # yields "1 2 3[1]"
"$($foo[1])" # yields "2"
$bar = "abc"
"$bar.Length" # yields "abc.Length"
"$($bar.Length)" # yields "3"
PowerShell only expands variables in those cases, nothing more. To force eval...
UPDATE multiple tables in MySQL using LEFT JOIN
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319
UPDATE t1
LEFT JOIN
t2
ON t2.id = t1.id
SET t1.col1 = newvalue
WHERE t2.id...
How to create a new java.io.File in memory?
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3 Answers
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Remove characters except digits from string using Python?
...y far the fastest approach is the .translate method:
>>> x='aaa12333bb445bb54b5b52'
>>> import string
>>> all=string.maketrans('','')
>>> nodigs=all.translate(all, string.digits)
>>> x.translate(all, nodigs)
'1233344554552'
>>>
string.maketra...
C pointers : pointing to an array of fixed size
...alizing it, hiding the array type behind a typedef name
typedef int Vector3d[3];
void transform(Vector3d *vector);
/* equivalent to `void transform(int (*vector)[3])` */
...
Vector3d vec;
...
transform(&vec);
Note additionally that the above code is invariant with relation to Vector3d type b...
Why can't I use switch statement on a String?
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1003
Switch statements with String cases have been implemented in Java SE 7, at least 16 years after ...
How do I disable form fields using CSS?
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13 Answers
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Fastest way to copy file in node.js
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answered Jul 2 '12 at 13:52
Miguel Sanchez GonzalezMiguel Sanchez Gonzalez
7,72322 gold badges1212 silver badges66 bronze badges
...
How to swap two variables in JavaScript
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323
Here's a one-liner to swap the values of two variables.
Given variables a and b:
b = [a, a = ...
Does Flask support regular expressions in its URL routing?
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3 Answers
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