大约有 30,000 项符合查询结果（耗时：0.0342秒） [XML]
What is the difference between sed and awk? [closed]
... this (which has room for improvement):
sed 's/-\([0-9.]\+\)/(\1)/g' inputfile
I would use awk when the text looks more like rows and columns or, as awk refers to them "records" and "fields". If I was going to do a similar operation as above, but only on the third field in a simple comma delimite...
Are table names in MySQL case sensitive?
...ta
directory. Each table within a database corresponds to at least one
file within the database directory. Consequently, the case sensitivity of the
underlying operating system plays a part in the case sensitivity of
database and table names.
One can configure how tables names are stored o...
Print text instead of value from C enum
...
I use something like this:
in a file "EnumToString.h":
#undef DECL_ENUM_ELEMENT
#undef DECL_ENUM_ELEMENT_VAL
#undef DECL_ENUM_ELEMENT_STR
#undef DECL_ENUM_ELEMENT_VAL_STR
#undef BEGIN_ENUM
#undef END_ENUM
#ifndef GENERATE_ENUM_STRINGS
#define DECL_ENU...
Is there a way for multiple processes to share a listening socket?
...sing fork() will cause the forked child to have copies of all the parent's file descriptors. Any that it does not close will continue to be shared, and (for example with a TCP listening socket) can be used to accept() new sockets for clients. This is how many servers, including Apache in most cases,...
How to check if a file exists in Go?
...'s standard library does not have a function solely intended to check if a file exists or not (like Python's os.path.exists ). What is the idiomatic way to do it?
...
How can I remove all my changes in my SVN working directory?
...N changes
svn revert -R .
Remove any other change and supports removing files/folders with spaces, etc.
svn status --no-ignore | grep -E '(^\?)|(^\I)' | sed -e 's/^. *//' | sed -e 's/\(.*\)/"\1"/' | xargs rm -rf
Don't forget to get the latest files from SVN
svn update --force
...
What's the easy way to auto create non existing dir in ansible
In my Ansible playbook many times i need to create file there
7 Answers
7
...
java.net.UnknownHostException: Invalid hostname for server: local
...local" on your network - examine your DNS settings or add it to your hosts file.
share
|
improve this answer
|
follow
|
...
Connect Java to a MySQL database
...fault 3306.
Download the JDBC driver and put in classpath, extract the ZIP file and put the containing JAR file in the classpath. The vendor-specific JDBC driver is a concrete implementation of the JDBC API (tutorial here).
If you're using an IDE like Eclipse or Netbeans, then you can add it to th...
Difference between framework vs Library vs IDE vs API vs SDK vs Toolkits? [closed]
...nly offer one area of functionality (processing images or operating on zip files)
An API (application programming interface) is a term meaning the functions/methods in a library that you can call to ask it to do things for you - the interface to the library.
An SDK (software development kit) is a ...