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What are the benefits of functional programming? [closed]
... the same time is called parallelism. See en.wikipedia.org/wiki/Concurrency_(computer_science)
– Lambda Fairy
Dec 9 '11 at 1:28
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Find and restore a deleted file in a Git repository
...mmit, this commit must have deleted it.
git rev-list -n 1 HEAD -- <file_path>
Then checkout the version at the commit before, using the caret (^) symbol:
git checkout <deleting_commit>^ -- <file_path>
Or in one command, if $file is the file in question.
git checkout $(git re...
Django: Display Choice Value
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It looks like you were on the right track - get_FOO_display() is most certainly what you want:
In templates, you don't include () in the name of a method. Do the following:
{{ person.get_gender_display }}
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How to remove specific elements in a numpy array
...mpy as np
a = np.array([1, 2, 3, 4, 5, 6, 7, 8, 9])
index = [2, 3, 6]
new_a = np.delete(a, index)
print(new_a) #Prints `[1, 2, 5, 6, 8, 9]`
Note that numpy.delete() returns a new array since array scalars are immutable, similar to strings in Python, so each time a change is made to it, a new ob...
Base64 length calculation?
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@techie_28: I make it 27308 characters for 20 * 1024 bytes, but I haven't had coffee yet this morning.
– Paul R
Jul 22 '16 at 6:21
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Insert line after first match using sed
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Alternatively, for portability, you can use perl instead:
perl -pi -e '$_ .= qq(CLIENTSCRIPT2="hello"\n) if /CLIENTSCRIPT=/' file
Or you could use ed or ex:
printf '%s\n' /CLIENTSCRIPT=/a 'CLIENTSCRIPT2="hello"' . w q | ex -s file
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Correct approach to global logging in Golang
...)
return logger
}
func createLogger(fname string) *logger {
file, _ := os.OpenFile(fname, os.O_RDWR|os.O_CREATE|os.O_TRUNC, 0777)
return &logger{
filename: fname,
Logger: log.New(file, "My app Name ", log.Lshortfile),
}
}
You can use it in this way
package ...
Where can I get a “useful” C++ binary search algorithm?
...that is compatible with the C++ STL containers, something like std::binary_search in the standard library's <algorithm> header, but I need it to return the iterator that points at the result, not a simple boolean telling me if the element exists.
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How to make a in Bootstrap look like a normal link in nav-tabs?
... not good (e.g. if you use "$link-decoration: underline !default;" in your _variables.scss). This should be probably noted by developers - perhaps this is not what they wanted to achieve. The link should be styled COMPLETELY as a button.
– Dmitry Somov
Apr 27 '...
BLE（二）信道&数据包&协议栈格式 - 创客硬件开发 - 清泛IT社区，...
文章源自：https://www.gandalf.site/2018/11/ble_23.html
参考低功耗蓝牙（BLE）安全初探
0x1 信道BLE的物理通道即“频道，分别是‘f=2402+k*2 MHz, k=0, … ,39’，带宽为2MHz”的40个RF Channel。
其中，有3个信道是advertising channel（广播通道）...