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Why doesn't GCC optimize a*a*a*a*a*a to (a*a*a)*(a*a*a)?
...scientific application. One thing I noticed is that GCC will optimize the call pow(a,2) by compiling it into a*a , but the call pow(a,6) is not optimized and will actually call the library function pow , which greatly slows down the performance. (In contrast, Intel C++ Compiler , executable ...
Scala: Nil vs List()
In Scala, is there any difference at all between Nil and List() ?
3 Answers
3
...
How to use font-awesome icons from node-modules
I have installed font-awesome 4.0.3 icons using npm install .
10 Answers
10
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MLKitSmartReply 拓展：智能回复建议（仅英语） · App Inventor 2 中文网
...有等价 API。所以：
运行方式
Android 6 ~ 10
Android 11 及以上
打包 APK
✅ 正常
✅ 正常
AI 伴侣联机
❌ 模型加载不了
✅ 正常
打包 APK 之所以不受限制，是因...
how to check if a file is a directory or regular file in python? [duplicate]
...
answered Jul 8 '10 at 14:48
Jesse JashinskyJesse Jashinsky
9,13755 gold badges3333 silver badges6161 bronze badges
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Send file using POST from a Python script
...The file was sent. Let's check:
>>> r.text
{
"origin": "179.13.100.4",
"files": {
"report.xls": "<censored...binary...data>"
},
"form": {},
"url": "http://httpbin.org/post",
"args": {},
"headers": {
"Content-Length": "3196",
"Accept-Encoding": "identity, def...
What does 'require: false' in Gemfile mean?
...
This means install the gem, but do not call require when you start Bundler. So you will need to manually call
require "whenever"
if you want to use the library.
If you were to do
gem "whenever", require: "whereever"
then bundler woul...
find filenames NOT ending in specific extensions on Unix?
Is there a simple way to recursively find all files in a directory hierarchy, that do not end in a list of extensions? E.g. all files that are not *.dll or *.exe
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Import multiple csv files into pandas and concatenate into one DataFrame
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If you have same columns in all your csv files then you can try the code below.
I have added header=0 so that after reading csv first row can be assigned as the column names.
import pandas as pd
import glob
path = r'C:\DRO\DCL_rawdata_files' # use you...
SQLAlchemy: how to filter date field?
...In fact, your query is right except for the typo: your filter is excluding all records: you should change the <= for >= and vice versa:
qry = DBSession.query(User).filter(
and_(User.birthday <= '1988-01-17', User.birthday >= '1985-01-17'))
# or same:
qry = DBSession.query(User)....