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Disable assertions in Python
...nt call last):
File "<string>", line 1, in <module>
AssertionError
Note that by disable I mean it also does not execute the expression that follows it:
$ python -Oc "assert 1/0"
$ python -c "assert 1/0"
Traceback (most recent call last):
File "<string>", line 1, in <modu...
error LNK2019: 无法解析的外部符号_socket，该符号在函数 中被引用 - C/C+...
error LNK2019: 无法解析的外部符号_socket，该符号在函数 中被引用1>NetClient.obj : error LNK2019: 无法解析的外部符号 _closesocket@4，该符号在函数 _main 中被引用1>NetClient.obj : error L...1>NetClient.obj : error LNK2019: 无法解析的外部符号 _closesocket@...
Docker can't connect to docker daemon
After I update my Docker version to 0.8.0 , I get an error message while entering sudo docker version :
40 Answers
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Extracting specific columns from a data frame
...
That gives the error object of type 'closure' is not subsettable.
– Aren Cambre
Apr 10 '12 at 2:48
24
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How to un-submodule a Git submodule?
..._lte 2.8.4
then
# Previous to git 2.9.0 the parameter would yield an error
ALLOW_UNRELATED_HISTORIES=""
else
# From git 2.9.0 this parameter is required
ALLOW_UNRELATED_HISTORIES="--allow-unrelated-histories"
fi
git merge -s ours --no-commit ${ALLOW_UNRELATED_HISTORIES} "${s...
How to configure slf4j-simple
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thanks I set "org.slf4j.simpleLogger.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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How do C++ class members get initialized if I don't do it explicitly?
...e object's class does not have a default constructor, it will be a compile error if you do not explicitly initialize it.
For primitive types (pointers, ints, etc), they are not initialized -- they contain whatever arbitrary junk happened to be at that memory location previously.
For references (e....
Git submodule head 'reference is not a tree' error
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This error can mean that a commit is missing in the submodule. That is, the repository (A) has a submodule (B). A wants to load B so that it is pointing to a certain commit (in B). If that commit is somehow missing, you'll get ...
Using python's eval() vs. ast.literal_eval()?
...aded operators) will fail. Eg. ast.literal_eval("1 & 1") will throw an error but eval("1 & 1") will not.
– Daniel van Flymen
May 22 '17 at 0:34
1
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Disable copy constructor
...nk the time spent following this pattern is greater than time saved by the errors it prevents. I simply forbid copy whenever not sure.
– Tomáš Zato - Reinstate Monica
Jan 14 '16 at 9:37
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