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What does new self(); mean in PHP?
...statically and checks whether the static class has the variable $_instance set.
If it isn't, it initializes an instance of itself (new self()) and stores it in $_instance.
If you call className::getInstance() you will get one and the same class instance on every call, which is the point of the si...
How do I pass a variable by reference?
...t', the_list)
the_list = ['and', 'we', 'can', 'not', 'lie']
print('set to', the_list)
outer_list = ['we', 'like', 'proper', 'English']
print('before, outer_list =', outer_list)
try_to_change_list_reference(outer_list)
print('after, outer_list =', outer_list)
Output:
before, outer_list =...
How to make Visual Studio copy a DLL file to the output directory?
...
It's also worth pointing out that he can set the post-build event via Project > Properties > Build Events > Post-Build Event.
– Phil Booth
Nov 21 '09 at 17:23
...
Delete a key from a MongoDB document using Mongoose
...e action in question by this:
User.collection.update({_id: user._id}, {$unset: {field: 1 }});
Since version 2.0 you can do:
User.update({_id: user._id}, {$unset: {field: 1 }}, callback);
And since version 2.4, if you have an instance of a model already you can do:
doc.field = undefined;
doc.s...
Creating a textarea with auto-resize
...e already changed text */
function delayedResize () {
window.setTimeout(resize, 0);
}
observe(text, 'change', resize);
observe(text, 'cut', delayedResize);
observe(text, 'paste', delayedResize);
observe(text, 'drop', delayedResize);
observe(text,...
What is the best way to determine the number of days in a month with JavaScript?
... Unfortunately this fails for dates before 1000 AD where you can only set the year correctly by using SetFullYear(). To make it bullet proof use new Date( 2000+(year%2000), month, 0 ).getDate()
– Noel Walters
Feb 20 '13 at 14:55
...
How To Create Table with Identity Column
...t I am about to blow away because I did not create it with the ID column set to be the table's Identity column.
4 Answers...
What is the difference between mocking and spying when using Mockito?
...and stub one method you have two options:
Using a mock you would have to set it up by invoking 7
callRealMethod and stub one method
Using a spy you have to set it up by stubbing one method
The official documentation on doCallRealMethod recommends using a spy for partial mocks.
See also java...
Order discrete x scale by frequency/value
...
Try manually setting the levels of the factor on the x-axis. For example:
library(ggplot2)
# Automatic levels
ggplot(mtcars, aes(factor(cyl))) + geom_bar()
# Manual levels
cyl_table <- table(mtcars$cyl)
cyl_levels <- names...
How to update Python?
...ajor version of official Python (e.g. 3.3), install side-by-side with old, set paths/associations to point to dominant (e.g. 2.7), shortcut to other (e.g. in BASH $ ln /c/Python33/python.exe python3).
The answer depends:
If OP has 2.7.x and wants to install newer version of 2.7.x, then
if usin...