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如何抓住痛点做出让用户尖叫的产品 - 更多技术 - 清泛网 - 专注C/C++及内核技术
如何抓住痛点做出让用户尖叫的产品在中国的互联网行业环境下，任何新鲜出炉的产品，不管是国内的还是国外的，只要模式够好，用户喜欢，不需要多少时间，一大波非常类似的产品...在中国的互联网行业环境下，任何新鲜出...
Add a prefix to all Flask routes
... container (anything that speaks WSGI will do) and to set your APPLICATION_ROOT config value to your prefix:
app.config["APPLICATION_ROOT"] = "/abc/123"
@app.route("/")
def index():
return "The URL for this page is {}".format(url_for("index"))
# Will return "The URL for this page is /abc/123/...
List directory tree structure in python?
...to do that with formatting:
import os
def list_files(startpath):
for root, dirs, files in os.walk(startpath):
level = root.replace(startpath, '').count(os.sep)
indent = ' ' * 4 * (level)
print('{}{}/'.format(indent, os.path.basename(root)))
subindent = ' ' * 4 *...
阿里双11大型项目管理怎么玩？ - 项目管理 - 清泛网 - 专注C/C++及内核技术
...
在面对大型项目、有几百人需进行工作沟通和协作时，如何健康有序运转项目？是否有一个成熟的、可参考的、可量化的项目管理工具帮助企业透明化沟通、数据化沉淀？
上图表格为某研发童鞋工作周报记录
2016年菜...
how to emulate “insert ignore” and “on duplicate key update” (sql merge) with postgresql?
...skipped if it would violate a primary/unique key constraint. For instance, MySQL has INSERT IGNORE .
11 Answers
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How to get the input from the Tkinter Text Widget?
...
Here is how I did it with python 3.5.2:
from tkinter import *
root=Tk()
def retrieve_input():
inputValue=textBox.get("1.0","end-1c")
print(inputValue)
textBox=Text(root, height=2, width=10)
textBox.pack()
buttonCommit=Button(root, height=1, width=10, text="Commit",
...
Is it possible to roll back CREATE TABLE and ALTER TABLE statements in major SQL databases?
...tive.
Is DDL transactional according to this document?
PostgreSQL - yes
MySQL - no; DDL causes an implicit commit
Oracle Database 11g Release 2 and above - by default, no, but an alternative called edition-based redefinition exists
Older versions of Oracle - no; DDL causes an implicit commit
SQL ...
How to generate .json file with PHP?
...t * from Posts limit 20";
$response = array();
$posts = array();
$result=mysql_query($sql);
while($row=mysql_fetch_array($result)) {
$title=$row['title'];
$url=$row['url'];
$posts[] = array('title'=> $title, 'url'=> $url);
}
$response['posts'] = $posts;
$fp = fopen('results.json...
SQL update query using joins
...
FYI this will NOT work in MySQL (different syntax)! For MySQL have a look at gcbenison's answer
– Sliq
Jan 17 '17 at 16:28
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如何选择机器学习算法 - 大数据 & AI - 清泛网 - 专注IT技能提升
如何选择机器学习算法Choosing-a-Machine-Learning-Classifier机器学习 算法如何针对某个分类问题决定使用何种机器学习算法？ 当然，如果你真心在乎准确率，最好的途径就是测试一大堆各式各样的算法（同时确保在每个算法上也测试...