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How to implement common bash idioms in Python? [closed]
...Also, if you want to replace awk, sed and grep with something Python based then I recommend pyp -
"The Pyed Piper", or pyp, is a linux command line text manipulation
tool similar to awk or sed, but which uses standard python string and
list methods as well as custom functions evolved to gene...
Lua简明教程 - 脚本技术 - 清泛IT论坛，有思想、有深度
...ot;,sum)复制代码
if-else分支
if age == 40 and sex =="Male" then
print("男人四十一枝花")
elseif age > 60 and sex ~="Female" then
print("old man without country!")
elseif age < 20 then
io.write("t...
WaitAll vs WhenAll
...give an analogy - it's like the difference between ordering a takeaway and then standing by the door waiting for it to arrive, vs ordering a takeaway, doing other stuff and then opening the door when the courier arrives...
– Jon Skeet
Dec 1 '15 at 21:37
...
How do I pass a method as a parameter in Python
...ked from your own code.
If you wanted method1 to be called with arguments, then things get a little bit more complicated. method2 has to be written with a bit of information about how to pass arguments to method1, and it needs to get values for those arguments from somewhere. For instance, if method...
How to set default values in Rails?
...es -- say, it's an inherited model that shares a table with some others -- then another elegant way is do it directly in your Rails code when the model object is created:
class GenericPerson < Person
def initialize(attributes=nil)
attr_with_defaults = {:last_name => "Doe"}.merge(attribu...
How to upgrade Git to latest version on macOS?
...ws the latest version and does not mention Apple with the version details, then you are all set.
If however you still see apple version, then type the following two lines, which will manually set our path to the local git distro instead of the Apple one.
export PATH=/usr/local/bin:$PATH
git --versio...
Detach many subdirectories into a new, separate Git repository
...ould remove all commits as xargs fails. brew install gnu-sed findutils and then use gsed and gxargs:
git filter-branch --prune-empty --parent-filter \
'gsed "s/-p //g" | gxargs git show-branch --independent | gsed "s/\</-p /g"'
...
How to 'bulk update' with Django?
...ment which looks like this: UPDATE "table" SET "field" = CASE "id" WHEN %s THEN %s WHEN %s THEN %s [...] WHERE id in (%s, %s, [...]);. This is kind of all right for few rows (when bulk updater is not needed), but with 10,000, the query is so complex, that postgres spends more time with CPU at 100% u...
Adding HTML entities using CSS content
...r an escaped character" trick, but have to mention that adding an nbsp and then a space kind of defeats the purpose of the nbsp ;)
– TWiStErRob
Dec 28 '17 at 12:44
...
Managing Sessions in Node.js? [closed]
...like Rack in Ruby. It gives you an extra layer where you can "play" with authentication, sessions, cookies, among others.
Other option is to use frameworks:
Express.js: http://expressjs.com/
It seems to be the most used node.js framework. Is like Sinatra for Ruby and runs on top of connect.
Gedd...