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Is “Java Concurrency In Practice” still valid? [closed]
... Interesting to note that they offer concurrency chapter for free at the moment (your link chapter 4 in Free Downloads)
– Askar Ibragimov
Sep 15 '16 at 9:53
add ...
How to prevent a dialog from closing when a button is clicked
... of brevity, I omitted the communication interface to pass the user choice info back to the activity. The documentation shows how this is done, though.
The button is still null in onCreateDialog so I disabled it in onResume. This has the undesireable effect of disabling the it again if the user swit...
C语言结构体里的成员数组和指针 - c++1y / stl - 清泛IT社区，为创新赋能！
...了二次内存分配，并把整个结构体返回给用户。用户调用free可以释放结构体，但是用户并不知道这个结构体内的成员也需要free，所以你不能指望用户来发现这个事。所以，如果我们把结构体的内存以及其成员要的内存一次性分...
Build and Version Numbering for Java Projects (ant, cvs, hudson)
... subversion revision number, time, user who ran the build, and some system information, stuff them into a .properties file that gets included in the application jar, and read that jar at runtime.
The ant code looks like this:
<!-- software revision number -->
<property name="version" valu...
Programmatically find the number of cores on a machine
...e following methods (guarded by appropriate #ifdef lines):
Win32
SYSTEM_INFO sysinfo;
GetSystemInfo(&sysinfo);
int numCPU = sysinfo.dwNumberOfProcessors;
Linux, Solaris, AIX and Mac OS X >=10.4 (i.e. Tiger onwards)
int numCPU = sysconf(_SC_NPROCESSORS_ONLN);
FreeBSD, MacOS X, NetBSD, Op...
How to configure slf4j-simple
....defaultLogLevel" to "error" in System.properties, however slf4j still log INFO level messages. Any idea? BTW, where should I put simplelogger.properties?
– Gelin Luo
Jan 27 '13 at 9:27
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GitHub: searching through older versions of files
...s of my repo files. For example, say, I used to have a function called get_info() in my code, but deleted it several versions ago, is it possible to search for get_info and find the code. If it is not possible using GitHub, is it possible from the git command line?
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What is the difference between Flex/Lex and Yacc/Bison?
...r, the Yacc at least has some non-standard extensions.
Flex and Bison are free. (AT&T) Lex and Yacc are not.
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How to estimate how much memory a Pandas' DataFrame will need?
...gt; df.memory_usage(deep=True).sum()
(gives results in bytes)
462432
df.info()
Prints dataframe info to stdout. Technically these are kibibytes (KiB), not kilobytes - as the docstring says, "Memory usage is shown in human-readable units (base-2 representation)." So to get bytes would multiply by...
How is TeamViewer so fast?
...
Theres the free TechSmith screen capture codec. It compresses efficiently and losless.
– sinni800
Jun 20 '14 at 12:26
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