大约有 42,000 项符合查询结果（耗时：0.0480秒） [XML]
What is the smallest possible valid PDF?
...00010 00000 n
0000000053 00000 n
0000000102 00000 n
trailer<</Size 4/Root 1 0 R>>
startxref
149
%EOF
which is 291 bytes of PDF joy. Acrobat opens it, but it complains somewhat. There is one page in it and it is 3/72" square, the minimum allowed by the spec.
However, Acrobat X doesn'...
How do I change the number of open files limit in Linux? [closed]
...t limits could be set by any user while hard limits are changeable only by root.
Limits are a property of a process. They are inherited when a child process is created so system-wide limits should be set during the system initialization in init scripts and user limits should be set during user login...
ACE vs Boost vs POCO [closed]
...t time. There are other classes I could use but haven't tried, e.g. Data::MySQL (I'm happy with mysql++) and Net::HTTP (I'm happy with libCURL). I'll try out the rest of Poco eventually, but that's not a priority at this point.
...
Getting error: Peer authentication failed for user “postgres”, when trying to get pgsql working with
...tgres:
http://www.postgresql.org/download/linux/debian/ (Wheezy 7.x)
as root …
root@www0:~# echo "deb http://apt.postgresql.org/pub/repos/apt/ wheezy-pgdg main" >> /etc/apt/sources.list
root@www0:~# wget --quiet -O - https://www.postgresql.org/media/keys/ACCC4CF8.asc | apt-key a...
What does “./” (dot slash) refer to in terms of an HTML file path location?
...is the the folder that the working file is in:
So in /index.htm ./ is the root directory
but in /css/style.css ./ is the css folder.
This is important to remember because if you move CSS from /index.htm to /css/style.css the path will change.
...
How to perform OR condition in django queryset?
...
Because QuerySets implement the Python __or__ operator (|), or union, it just works. As you'd expect, the | binary operator returns a QuerySet so order_by(), .distinct(), and other queryset filters can be tacked on to the end.
combined_queryset = User.objects.filter(income__gte=5000) | ...
Overloading member access operators ->, .*
...e first part of what -> does).
The C++ -> operator is basically the union of two steps and this is clear if you think that x->y is equivalent to (*x).y. C++ allows you to customize what to do with the (*x) part when x is an instance of your class.
The semantic for -> overloading is som...
Can't choose class as main class in IntelliJ
...swer in the link associated with the "Java class located out of the source root."
Configure your source and test roots and it should work.
https://www.jetbrains.com/idea/webhelp/configuring-content-roots.html
Since you stated that these are tests you should probably go with them marked as Test Sou...
Why use a READ UNCOMMITTED isolation level?
... will in practice be writing corrupted data. Also the article stated that "MySQL, which grew up on web apps, is much less pessimistic out of the box than SQL Server". Not true, Sql Server works at read-commited level by default, while MySQL works at repeatable-reads by default, five levels away from...
How to only find files in a given directory, and ignore subdirectories using bash
...directory below the one I'm working in on.
find /dev -maxdepth 1 -name "*.root" -type 'f' -size +100k -ls
Return nothing with '.' instead I get list of all 'big' files in my directory as well as the rootfiles/ directory where I store old ones.
Continuing. This works.
find ./ -maxdepth 1 -name "...