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what is the best way to convert a json formatted key value pair to ruby hash with symbol as key?
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257
using the json gem when parsing the json string you can pass in the symbolize_names option. Se...
How to make a in Bootstrap look like a normal link in nav-tabs?
I'm working in (formerly Twitter) Bootstrap 2 and I wanted to style buttons as though they were normal links. Not just any normal links, though; these are going in a <ul class="nav nav-tabs nav-stacked"> container. The markup will end up like this:
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How to read a file without newlines?
...ewline at the end of file:
with open(the_file, 'r+') as f:
f.seek(-1, 2) # go at the end of the file
if f.read(1) != '\n':
# add missing newline if not already present
f.write('\n')
f.flush()
f.seek(0)
lines = [line[:-1] for line in f]
Or a simpler alt...
Ignore modified (but not committed) files in git?
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277
check out the git-update-index man page and the --assume-unchanged bit and related.
when I ha...
Is there a simple, elegant way to define singletons? [duplicate]
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21 Answers
21
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How do I space out the child elements of a StackPanel?
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281
Use Margin or Padding, applied to the scope within the container:
<StackPanel>
<...
How to make execution pause, sleep, wait for X seconds in R?
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2 Answers
2
Active
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How to make an AJAX call without jQuery?
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23 Answers
23
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Cron jobs and random times, within given hours
I need the ability to run a PHP script 20 times a day at completely random times. I also want it to run only between 9am - 11pm.
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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）...