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Difference between == and === in JavaScript [duplicate]
...ally equal (have
the same number value). NaN is not
equal to anything, including NaN.
Positive and negative zeros are equal
to one another.
Two Boolean operands are strictly equal if both are true or
both are false.
Two objects are strictly equal if they refer to the same Object.
Nul...
How to loop backwards in python? [duplicate]
...something()
This works on basically everything that has a defined order, including xrange objects and lists.
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Fastest way to determine if record exists
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@SnakeDoc To find out about table structure, including foreign keys and indexes, run sp_help table_name. Indexes are essential when it comes to retrieving a few rows out of many, wherther using select top or exists; if they are not present sql engine will have to perfor...
How to maintain aspect ratio using HTML IMG tag
...s not, as the question was specifically about any image of any resolution. Including resolutions smaller than 64x64.
– Koenigsberg
Jul 31 '18 at 8:50
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How do you check in python whether a string contains only numbers?
...ng are digits and there is at least one character, False otherwise. Digits include decimal characters and digits that need special handling, such as the compatibility superscript digits. This covers digits which cannot be used to form numbers in base 10, like the Kharosthi numbers. Formally, a digit...
What is best tool to compare two SQL Server databases (schema and data)? [duplicate]
I would like to compare two SQL Server databases including schema (table structure) and data in tables too. What is best tool to do this?
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How to check if an activity is the last one in the activity stack for an application?
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One way to keep track of this is to include a marker when you start a new activity and check if the marker exists.
Whenever you start a new activity, insert the marker:
newIntent=new Intent(this, NextOne.class);
newIntent.putExtra(this.getPackageName()+"mysel...
What is the use of having destructor as private?
...hy and a custom memory-manager -- such scenarios may use a private dtor.
#include <iostream>
class a {
~a() {}
friend void delete_a(a* p);
};
void delete_a(a* p) {
delete p;
}
int main()
{
a *p = new a;
delete_a(p);
return 0;
}
...
How can I get the current user's username in Bash?
...e command line shown seems to be specific to any shell. In fact, why even include the pipe through awk? As far as I can tell, your ps command is everything required to display the owner of the current shell's pid.
– ghoti
Dec 1 '14 at 19:50
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Vim indent xml file
...ult.
Long answer: I have tried many strategies to auto-indent XML in Vim, including the xmllint approach discussed on the Vim wiki. The problem with xmllint (and the same approach with other external CLI tools such as xmlformat and tidy, too) is that they all insist on squeezing out blank newlines....