大约有 43,000 项符合查询结果(耗时:0.0520秒) [XML]

https://stackoverflow.com/ques... 

Which commit has this blob?

... Here it is as a shell script – short and sweet, but slow: #!/bin/sh obj_name="$1" shift git log "$@" --pretty=format:'%T %h %s' \ | while read tree commit subject ; do if git ls-tree -r $tree | grep -q "$obj_name" ; then echo $commit "$subject" fi done And an optimised version ...
https://stackoverflow.com/ques... 

Which characters make a URL invalid?

...racters: ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789-._~:/?#[]@!$&'()*+,;= Note that this list doesn't state where in the URI these characters may occur. Any other character needs to be encoded with the percent-encoding (%hh). Each part of the URI has further restrictions...
https://stackoverflow.com/ques... 

Python append() vs. + operator on lists, why do these give different results?

...ut answering the questions asked? People ask why PHP is called PHP and why __lt__ could not be overloaded in Python (nowadays it can). Why-questions are the most essential ones but often the trickiest to answer: they ask for the essence, not for a pointer to the manual. And of course: if you dislike...
https://stackoverflow.com/ques... 

SQL WHERE.. IN clause multiple columns

...ble1 to this derived table: select * from table1 LEFT JOIN ( Select CM_PLAN_ID, Individual_ID From CRM_VCM_CURRENT_LEAD_STATUS Where Lead_Key = :_Lead_Key ) table2 ON table1.CM_PLAN_ID=table2.CM_PLAN_ID AND table1.Individual=table2.Individual WHERE table2.CM_PLAN_ID IS NOT NULL ...
https://stackoverflow.com/ques... 

“Keep Me Logged In” - the best approach

...to page within the app. In this specific application, I'm storing the user_id , first_name and last_name of the person. ...
https://stackoverflow.com/ques... 

Using global variables between files?

...al variables" from C. A global variable is actually defined in a module's __dict__ and can be accessed from outside that module as a module attribute. So, in your example: # ../myproject/main.py # Define global myList # global myList - there is no "global" declaration at module level. Just insi...
https://stackoverflow.com/ques... 

How to return a string value from a Bash function

...iable with the string you want to return. #!/bin/bash set -x function pass_back_a_string() { eval "$1='foo bar rab oof'" } return_var='' pass_back_a_string return_var echo $return_var Prints "foo bar rab oof". Edit: added quoting in the appropriate place to allow whitespace in string to add...
https://stackoverflow.com/ques... 

How to set target hosts in Fabric file

...rovided username in a roledef? A further dictionary entry 'password': 'some_password' seems to be ignored and leads to a prompt at runtime. – Dirk Jun 16 '16 at 13:02 ...
https://stackoverflow.com/ques... 

Which is faster in Python: x**.5 or math.sqrt(x)?

... In python 2.6 the (float).__pow__() function uses the C pow() function and the math.sqrt() functions uses the C sqrt() function. In glibc compiler the implementation of pow(x,y) is quite complex and it is well optimized for various exceptional cases...
https://stackoverflow.com/ques... 

Using pickle.dump - TypeError: must be str, not bytes

..., that's why you are here. import pickle class MyUser(object): def __init__(self,name): self.name = name user = MyUser('Peter') print("Before serialization: ") print(user.name) print("------------") serialized = pickle.dumps(user) filename = 'serialized.native' with open(filename,...