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Python style - line continuation with strings? [duplicate]
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Sven MarnachSven Marnach
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Get last n lines of a file, similar to tail
...Here is my answer. Pure python. Using timeit it seems pretty fast. Tailing 100 lines of a log file that has 100,000 lines:
>>> timeit.timeit('tail.tail(f, 100, 4098)', 'import tail; f = open("log.txt", "r");', number=10)
0.0014600753784179688
>>> timeit.timeit('tail.tail(f, 100, 4...
How to clone all repos at once from GitHub?
...E=1
curl "https://api.github.com/$CNTX/$NAME/repos?page=$PAGE&per_page=100" |
grep -e 'git_url*' |
cut -d \" -f 4 |
xargs -L1 git clone
Set CNTX=users and NAME=yourusername, to download all your repositories.
Set CNTX=orgs and NAME=yourorgname, to download all repositories of your organi...
Creating a range of dates in Python
...with today, and going back an arbitrary number of days, say, in my example 100 days. Is there a better way to do it than this?
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Change C++/CLI project to another framework than 4.0 with vs2010
...xplanation by itself. The core issue is that the C runtime library (msvcrt100.dll and up) contains .NET code to support managed code execution. The crucial detail is a module initializer that ensures the CRT is correctly initialized in program that uses C++/CLI code. That code always targets .NET...
通过 ulimit 改善系统性能 - 操作系统(内核) - 清泛网 - 专注C/C++及内核技术
...shell 终端进程，只在其中一个环境中执行了 ulimit – s 100，则该 shell 进程里创建文件的大小收到相应的限制，而同时另一个 shell 终端包括其上运行的子程序都不会受其影响：
Shell 进程 1
ulimit – s 100
cat testFile > newFi...
Android Bitmap to Base64 String
... new ByteArrayOutputStream();
bitmap.compress(Bitmap.CompressFormat.PNG, 100, byteArrayOutputStream);
byte[] byteArray = byteArrayOutputStream .toByteArray();
to encode base64 from byte array use following method
String encoded = Base64.encodeToString(byteArray, Base64.DEFAULT);
...
How can I add a vertical scrollbar to my div automatically?
...o make the overflow: auto; property work.
For testing purpose, add height: 100px; and check.
and also it will be better if you give overflow-y:auto; instead of overflow: auto;, because this makes the element to scroll only vertical but not horizontal.
float:left;
width:1000px;
overflow-y: auto;
hei...
How do I check that multiple keys are in a dict in a single pass?
...imer
>>> setup='''from random import randint as R;d=dict((str(R(0,1000000)),R(0,1000000)) for i in range(D));q=dict((str(R(0,1000000)),R(0,1000000)) for i in range(Q));print("looking for %s items in %s"%(len(q),len(d)))'''
>>> Timer('set(q) <= set(d)','D=1000000;Q=100;'+setup)....
How to extract the n-th elements from a list of tuples?
... than the list comprehension:
setup = 'elements = [(1,1,1) for _ in range(100000)];from operator import itemgetter'
method1 = '[x[1] for x in elements]'
method2 = 'map(itemgetter(1), elements)'
import timeit
t = timeit.Timer(method1, setup)
print('Method 1: ' + str(t.timeit(100)))
t = timeit.Timer...