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Get nth character of a string in Swift programming language
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573
Attention: Please see Leo Dabus' answer for a proper implementation for Swift 4 and Swift 5.
Sw...
Aligning rotated xticklabels with their respective xticks
...ption, you want: ha='right'
n=5
x = np.arange(n)
y = np.sin(np.linspace(-3,3,n))
xlabels = ['Ticklabel %i' % i for i in range(n)]
fig, axs = plt.subplots(1,3, figsize=(12,3))
ha = ['right', 'center', 'left']
for n, ax in enumerate(axs):
ax.plot(x,y, 'o-')
ax.set_title(ha[n])
ax.set_...
Python syntax for “if a or b or c but not all of them”
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238
If you mean a minimal form, go with this:
if (not a or not b or not c) and (a or b or c):
Wh...
Is there a way to suppress JSHint warning for one given line?
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3 Answers
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【BLE技术内幕】BLE技术揭秘 - 创客硬件开发 - 清泛IT论坛，有思想、有深度
...uetooth SIG）在2010年发布了跨时代的蓝牙4.0，它并不是蓝牙3.0的简单升级版本，而是全新的技术架构，蓝牙4.0版本分两种模式：单模蓝牙和双模蓝牙。常见的蓝牙音箱，是典型的双模蓝牙，它需要传输大量的音频数据。而小米手环...
Stripping everything but alphanumeric chars from a string in Python
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347
I just timed some functions out of curiosity. In these tests I'm removing non-alphanumeric ch...
Import Error: No module named numpy
...is question , but still one step behind. I have only one version of Python 3 installed on my Windows 7 ( sorry ) 64-bit system.
...
Identifying the dependency relationship for python packages installed with pip
...e [installed: 0.18]
- itsdangerous [required: >=0.21, installed: 0.23]
alembic==0.6.2
- SQLAlchemy [required: >=0.7.3, installed: 0.9.1]
- Mako [installed: 0.9.1]
- MarkupSafe [required: >=0.9.2, installed: 0.18]
ipython==2.0.0
slugify==0.0.1
redis==2.9.1
To get it run:
pip i...
How to use timeit module
...int min(timeit.Timer('a=s[:]; timsort(a)', setup=setup).repeat(7, 1000))
0.334147930145
Note that the series of statements makes a fresh copy of the unsorted data on every pass.
Also, note the timing technique of running the measurement suite seven times and keeping only the best time -- this can...