大约有 39,000 项符合查询结果（耗时：0.0422秒） [XML]
Determine if variable is defined in Python [duplicate]
...of None. It's literally the semantic meaning of None-- it's nothing, nada, zip. It exists, but has "no value". Using a non-None value is useful if None can come up in an assignment and so on, but this is not so common that avoiding None should be standard practice. For example, in the question, a wo...
Using a .php file to generate a MySQL dump
...ct the output of mysqldump to the browser. In this example it also will be zipped.
Pro: You don't have to deal with temp files.
Con: Won't work on Windows. May have limits with huge datasets.
<?php
$DBUSER="user";
$DBPASSWD="password";
$DATABASE="user_db";
$filename = "backup-" . date("d-m-Y...
Can I use Twitter Bootstrap and jQuery UI at the same time?
...7_1x100.png
- etc (8 more files that were in the downloaded jQUI zip file)
share
|
improve this answer
|
follow
|
...
Named string formatting in C#
...as posted in the comments: code.haacked.com/util/NamedStringFormatSolution.zip
– Der Hochstapler
Aug 28 '12 at 11:23
3
...
How can I find the latitude and longitude from address?
... Great Solution. IOException will be called when Invalid address/zipcode is entered. You can avoid that error with a simple if(address.size() <1){//show a Toast}else{//put rest of code here}
– grantespo
Jun 4 '18 at 4:32
...
Reverse colormap in matplotlib
...)
reverse.append(sorted(data))
LinearL = dict(zip(k,reverse))
my_cmap_r = mpl.colors.LinearSegmentedColormap(name, LinearL)
return my_cmap_r
See that it works:
my_cmap
<matplotlib.colors.LinearSegmentedColormap at 0xd5a0518>
my_cmap_r = reverse...
How to copy Docker images from one host to another without using a repository
...
Transferring a Docker image via SSH, bzipping the content on the fly:
docker save <image> | bzip2 | \
ssh user@host 'bunzip2 | docker load'
It's also a good idea to put pv in the middle of the pipe to see how the transfer is going:
docker save <...
How to group dataframe rows into list in pandas groupby?
...','B','B','C']
N = [1,2,5,5,4,6]
import pandas as pd
df = pd.DataFrame(zip(L,N),columns = list('LN'))
groups = df.groupby(df.L)
groups.groups
{'A': [0, 1], 'B': [2, 3, 4], 'C': [5]}
which gives and index-wise description of the groups.
To get elements of single groups, you can do, ...
Classpath including JAR within a JAR
...
Use the zipgroupfileset tag (uses same attributes as a fileset tag); it will unzip all files in the directory and add to your new archive file.
More information: http://ant.apache.org/manual/Tasks/zip.html
This is a very useful way ...
Why use deflate instead of gzip for text files served by Apache?
...
Why use deflate instead of gzip for text files served by Apache?
The simple answer is don't.
RFC 2616 defines deflate as:
deflate The "zlib" format defined in RFC 1950 in combination with the "deflate" compression mechanism described in RFC 1...