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What is the smallest possible valid PDF?
Out of simple curiosity, having seen the smallest GIF , what is the smallest possible valid PDF file?
4 Answers
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Is it possible only to declare a variable without assigning any value in Python?
...ython is dynamic, so you don't need to declare things; they exist automatically in the first scope where they're assigned. So, all you need is a regular old assignment statement as above.
This is nice, because you'll never end up with an uninitialized variable. But be careful -- this doesn't mean...
spring boot default H2 jdbc connection (and H2 console)
...ething to enter when starting the H2 console (in this case, "AZ"). I think all of these are required though it seems like leaving out the spring.jpa.database-platform does not hurt anything.
In application.properties:
spring.datasource.url=jdbc:h2:mem:AZ;DB_CLOSE_DELAY=-1;DB_CLOSE_ON_EXIT=FALSE
s...
Remove element by id
...].map(n => n && n.remove());
These functions are available in all modern browsers (not IE). Read more on MDN.
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How to recursively find and list the latest modified files in a directory with subdirectories and ti
...es with several subdirectories and files in them. I need to make a list of all these directories that is constructed in a way such that every first-level directory is listed next to the date and time of the latest created/modified file within it.
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How can I change the table names when using ASP.NET Identity?
... p.Id).HasColumnName("User_Id");
or simply the below if you want to keep all the standard column names:
modelBuilder.Entity<IdentityUser>()
.ToTable("Users", "dbo")
Full example below (this should be in your IdentityModel.cs file) i changed my ApplicationUser class...
Does file_get_contents() have a timeout setting?
I am calling a series of links using the file_get_contents() method in a loop. Each link may take more than 15 minutes to process. Now, I worry about whether PHP's file_get_contents() has a timeout period?
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Change a column type from Date to DateTime during ROR migration
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This answer is only partially correct, you can not use change_column inside change even on rails 4 or down migration will not work. You should use up/down no matter the version of rails.
– Alan Peabody
Jul 18 '1...
What is the difference between include and require in Ruby?
...unctionality, you can use
the load method.
The include method takes all the
methods from another module and
includes them into the current module.
This is a language-level thing as
opposed to a file-level thing as with
require. The include method is the
primary way to "extend" cla...
What is the difference between D3 and jQuery?
...jQuery you directly manipulate elements, but with D3 you provide data and callbacks through D3's unique data(), enter() and exit() methods and D3 manipulates elements.
D3 is usually used for data visualization but jQuery is used for creating web apps. D3 has many data visualization extensions and jQ...