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What is your single most favorite command-line trick using Bash? [closed]
...l know how to use <ctrl>-R to reverse search through history, but did you know you can use <ctrl>-S to forward search if you set stty stop "" ? Also, have you ever tried running bind -p to see all of your keyboard shortcuts listed? There are over 455 on Mac OS X by default.
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print memory address of Python variable [duplicate]
How do I print the memory address of a variable in Python 2.7?
I know id() returns the 'id' of a variable or object, but this doesn't return the expected 0x3357e182 style I was expecting to see for a memory address.
I want to do something like print &x , where x is a C++ int variable for exam...
Scroll to bottom of Div on page load (jQuery)
...y'll work, unless you have more than double the div's height in content inside of it.
Here is the correct version:
$('#div1').scrollTop($('#div1')[0].scrollHeight);
or jQuery 1.6+ version:
var d = $('#div1');
d.scrollTop(d.prop("scrollHeight"));
Or animated:
$("#div1").animate({ scrollTop: $...
Change Schema Name Of Table In SQL
...a = 'exe'
while exists(select * from sys.tables where schema_name(schema_id) = @oldschema)
begin
select @table = name from sys.tables
where object_id in(select min(object_id) from sys.tables where schema_name(schema_id) = @oldschema)
set @sql = 'alter schema ' + @newschema +...
Understanding Python's “is” operator
...ation for the is operator:
The operators is and is not test for object identity: x is y is true if and only if x and y are the same object.
Use the == operator instead:
print(x == y)
This prints True. x and y are two separate lists:
x[0] = 4
print(y) # prints [1, 2, 3]
print(x == y) # p...
What does the “map” method do in Ruby?
... sentence describes map as though it were map!
– kaleidic
Aug 12 '13 at 14:56
12
to see the diffe...
Post data to JsonP
...ting hacks out there if you're willing to go to a lot of effort inserting hidden <iframe>s and mucking about with their properties.
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What do commas and spaces in multiple classes mean in CSS?
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.container_12 .grid_6,
.container_16 .grid_8 {
width: 460px;
}
That says "make all .grid_6's within .container_12's and all .grid_8's within .container_16's 460 pixels wide." So both of the following will render the same:
<div class...
Finding duplicate values in MySQL
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But how is this useful if you can't get the IDs of the rows with duplicate values? Yes, you can do a new query matching for each duplicate value, but is it possible to simply list the duplicates?
– NobleUplift
Jul 24 '14 at 14:41
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Get index of selected option with jQuery
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@Guffa Any idea as to why the selectedIndex doesn't start from 0 with the first option?
– adamj
Mar 25 '16 at 23:27
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