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Difference between JSON.stringify and JSON.parse
...pt object into JSON text and stores that JSON text in a string, eg:
var my_object = { key_1: "some text", key_2: true, key_3: 5 };
var object_as_string = JSON.stringify(my_object);
// "{"key_1":"some text","key_2":true,"key_3":5}"
typeof(object_as_string);
// "string"
JSON.parse turns a...
How do I rename a column in a database table using SQL?
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I believe MySQL 8.0 supports this syntax now
– Dan
Apr 23 at 17:41
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Linux环境离线安装docker&docker-compose - 大数据 & AI - 清泛网 - 专注C/C++及内核技术
... firewalld.service
Wants=network-online.target
[Service]
Type=notify
ExecStart=/usr/bin/dockerd
ExecReload=/bin/kill -s HUP $MAINPID
TimeoutSec=0
RestartSec=2
ExecStartPost=/usr/sbin/iptables -P FORWARD ACCEPT
Restart=always
TimeoutStartSec=0
LimitNOFILE=infinity
Limit...
Where to learn about VS debugger 'magic names'
If you've ever used Reflector, you probably noticed that the C# compiler generates types, methods, fields, and local variables, that deserve 'special' display by the debugger. For instance, local variables beginning with 'CS$' are not displayed to the user. There are other special naming conventions...
CMake: How to build external projects and include their targets
...}/include"
"${gmock_SOURCE_DIR}/include")
endif()
# Now simply link your own targets against gtest, gmock,
# etc. as appropriate
However it does seem quite hacky. I'd like to propose an alternative solution - use Git submodules.
cd MyProject/dependencies/gtest
git submodule...
Pandas - Get first row value of a given column
...could use:
In [30]: df_test['Btime'].iloc[0]
Out[30]: 1.2
There is a difference between df_test['Btime'].iloc[0] (recommended) and df_test.iloc[0]['Btime']:
DataFrames store data in column-based blocks (where each block has a single
dtype). If you select by column first, a view can be returned...
Automatically add newline at end of curl response body
If the HTTP response body for a curl request doesn't contain a trailing newline, I end up with this really annoying condition where the shell prompt is in the middle of the line, and escaping is messed up enough that when I put the last curl command on the screen, deleting characters from that curl ...
How to repeat a “block” in a django template
...nd this seems like a good approach. thanks.
– thebiglife
Sep 27 '09 at 19:17
1
This approach is e...
In Vim, is there a way to paste text in the search line?
... copy it to a named register, with "ayy (if the cursor is on that line!).
Now you can execute the contents of the "a" register from Vim's Ex command line with:
:[OPTIONAL_RANGE]@a
I use it all the time.
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How to set the current working directory? [duplicate]
... be a string. in addition, chdir expects a directory name, but you are specifying a file.
– mwil.me
Jan 14 '16 at 1:25
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