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请教：选离线版还是在线版？ - App Inventor 2 离线版 - 清泛IT社区，为创新赋能！
我是几天前申请了10天免费离线版。编了一个找车app。位置传感器搞通了，微数据库也搞通了，就是谷歌地图连不上。现在决定成为付费会员。就是不知道，选离线版还是在线版？一，功能哪个全？二，能不能两边都玩？谢谢。1...
How to get process ID of background process?
...olling terminal. A script will not necessarily have a terminal attached at all so job control will not necessarily be available.
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Alternatives to gprof [closed]
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Valgrind has an instruction-count profiler with a very nice visualizer called KCacheGrind. As Mike Dunlavey recommends, Valgrind counts the fraction of instructions for which a procedure is live on the stack, although I'm sorry to say it appears to become confused in the presence of mutual recur...
Makefile, header dependencies
...vided by the gnu preprocessor are a bit confusing. However, the removal of all directories from the build target with -MM is documented and not a bug [gpp]:
By default CPP takes the name of the main input file, deletes any
directory components and any file suffix such as ‘.c’, and appends ...
how to debug the js in jsfiddle
...ever using chrome dev tools. Press ctrl+shift+F and you can search through all the files in the source.
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What is the difference between quiet NaN and signaling NaN?
...unit (FPU) or library if floating-point is implemented in software. A signalling NaN will produce a signal, usually in the form of exception from the FPU. Whether the exception is thrown depends on the state of the FPU.
C++11 adds a few language controls over the floating-point environment and pr...
How to get all of the immediate subdirectories in Python
...o write a simple Python script that will copy a index.tpl to index.html in all of the subdirectories (with a few exceptions).
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How to get a specific output iterating a hash in Ruby?
...uld add, that in 1.8 the items will be iterated in random order (well, actually in an order defined by Fixnum's hashing function), while in 1.9 it will be iterated in the order of the literal.
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How to track child process using strace?
...ously search for the parent thread, then the grandparent thread, and so on all the way to the root process.
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What is RSS and VSZ in Linux memory management
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RSS is the Resident Set Size and is used to show how much memory is allocated to that process and is in RAM. It does not include memory that is swapped out. It does include memory from shared libraries as long as the pages from those libraries are actually in memory. It does include all st...