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In Python, how do I convert all of the items in a list to floats?
...ension: new_list = [float(i) for i in list]
To change list in-place:
for index, item in enumerate(list):
list[index] = float(item)
BTW, avoid using list for your variables, since it masquerades built-in function with the same name.
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git pull while not in a git directory
...
Starting git 1.8.5 (Q4 2013), you will be able to "use a Git command, but without having to change directories".
Just like "make -C <directory>", "git -C <directory> ..." tells Git to go there before doing anything else.
See co...
How to structure a express.js application?
...orm.jade
|~test
| |~controllers
| |-zoo.js
| |~models
| |-zoo.js
|-index.js
I use Exports to return what's relevant. For instance, in the models I do:
module.exports = mongoose.model('PhoneNumber', PhoneNumberSchema);
and then if I need to create a phone number, it's as simple as:
var Phon...
How can I list all collections in the MongoDB shell?
... collections:
show collections
Output:
collection1
collection2
system.indexes
(or)
show tables
Output:
collection1
collection2
system.indexes
(or)
db.getCollectionNames()
Output:
[ "collection1", "collection2", "system.indexes" ]
To enter or use given collection
use collec...
Database sharding vs partitioning
...of a schema and a database server. It may
offer an advantage by reducing index size (and thus search effort)
provided that there is some obvious, robust, implicit way to identify
in which table a particular row will be found, without first needing
to search the index, e.g., the classic examp...
Open a file with Notepad in C#
... from windows.
Note to those in the comments, thankyou for your input. My quick n' dirty answer was slightly off, i've updated the answer to reflect the correct way.
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Frontend tool to manage H2 database [closed]
...lo.com/
http://www.minq.se/products/dbvis/
http://executequery.org/index.jsp
http://sqldeveloper.solyp.com/index.html
http://sql-workbench.net/index.html
http://www.squirrelsql.org/
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LINGO使用指南 - 更多技术 - 清泛网 - 专注C/C++及内核技术
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LINGO提供了几个函数帮助处理集。
1．@in(set_name,primitive_index_1 [,primitive_index_2,…])
如果元素在指定集中，返回1；否则返回0。
例4.7 全集为I，B是I的一个子集，C是B的补集。
sets:
I/x1..x4/;
B(I)/x2/;
C(I)|#not#@in(B,&1):;
endsets
2...
How to check for Is not Null And Is not Empty string in SQL server?
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Because if column has an index, then your query will probably not use it
– Lamak
Dec 28 '11 at 19:20
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How to extract a substring using regex
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System.out.println(matcher.group(0)); <--- Zero based index
– nclord
May 13 '16 at 14:49
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