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The difference between bracket [ ] and double bracket [[ ]] for accessing the elements of a list or
... within the list
alist <- list(c("a", "b", "c"), c(1,2,3,4), c(8e6, 5.2e9, -9.3e7))
str(alist[[1]])
chr [1:3] "a" "b" "c"
str(alist[1])
List of 1
$ : chr [1:3] "a" "b" "c"
str(alist[[1]][1])
chr "a"
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Hidden features of WPF and XAML?
...ramework.Aero, Version=3.0.0.0, Culture=neutral,
PublicKeyToken=31bf3856ad364e35, ProcessorArchitecture=MSIL;component/themes/aero.normalcolor.xaml" />
</Window.Resources>
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程序员之网络安全系列（二）：如何安全保存用户密码及哈希算法 - 更多技术 ...
...2.3 :003 > puts Digest::MD5.hexdigest('I love you安红我爱你')
b10d890bf46b1a045eb99af5d43c7b13
=> nil
2.2.3 :004 > puts Digest::MD5.hexdigest('I dont love you')
c82294c9a7b6e4a372ad25ed4d6011c9
=> nil
2.2.3 :005 > puts Digest::MD5.hexdigest('I dont love you安红我爱你')
dce67bcdfdf00...
How to delete or add column in SQLITE?
....sub(r',(\s*\))', r'\1', create)
temp = 'tmp%d' % random.randint(1e8, 1e9)
db.execute("ALTER TABLE %(old)s RENAME TO %(new)s" % {
'old': table, 'new': temp })
db.execute(create)
db.execute("""
INSERT INTO %(new)s ( %(columns)s )
SELECT %(columns)s FROM %(old...
Way to get all alphabetic chars in an array in PHP?
...> BA [53] => BB [54] => BC [55] => BD [56] => BE [57] => BF [58] => BG [59] => BH [60] => BI [61] => BJ [62] => BK [63] => BL [64] => BM [65] => BN [66] => BO [67] => BP [68] => BQ [69] => BR [70] => BS [71] => BT [72] => BU [73] => B...
How to use Namespaces in Swift?
...my files in a gist:
https://gist.github.com/mikajauhonen/d4b3e517122ad6a132b8
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Combining multiple commits before pushing in Git [duplicate]
...o one
afb581 Fix this and that |
4e9baa Cool implementation |
d94e78 Prepare the workbench for feature Z -------------------┘
6394dc Feature Y --- older commit
You can either do this...
RuntimeError on windows trying python multiprocessing
... edited Mar 21 '17 at 19:51
B8vrede
3,59433 gold badges2020 silver badges3333 bronze badges
answered Aug 13 '13 at 9:15
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How can I get list of values from dict?
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ipython 7.5.0 py37h24bf2e0_0
The result
For small dictionaries * operator is quicker
For big dictionaries where it matters list() is maybe slightly quicker
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Minimal web server using netcat
... 306 31 0 0 100 0
Addresses:
eth0 Link encap:Ethernet HWaddr b8:27:eb:86:e8:c5
inet addr:192.168.1.83 Bcast:192.168.1.255 Mask:255.255.255.0
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:27734 errors:0 dropped:0 overruns:0 frame:0
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