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How to atomically delete keys matching a pattern using Redis
...use of performance maters, keys
command should not use for regular operations in production, this
command is intended for debugging and special operations. read
more
See the EVAL documentation.
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How to estimate how much memory a Pandas' DataFrame will need?
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To include indexes, pass index=True.
So to get overall memory consumption:
>>> df.memory_usage(index=True).sum()
731731000
Also, passing deep=True will enable a more accurate memory usage report, that accounts for the full usage of the contained objects.
This is because memory usage d...
How to show google.com in an iframe?
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The reason for this is, that Google is sending an "X-Frame-Options: SAMEORIGIN" response header. This option prevents the browser from displaying iFrames that are not hosted on the same domain as the parent page.
See: Mozilla Developer Network - The X-Frame-Options response header
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Incrementing a date in JavaScript
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Three options for you:
1. Using just JavaScript's Date object (no libraries):
My previous answer for #1 was wrong (it added 24 hours, failing to account for transitions to and from daylight saving time; Clever Human pointed out that...
How is an HTTP POST request made in node.js?
...('querystring');
var http = require('http');
var fs = require('fs');
function PostCode(codestring) {
// Build the post string from an object
var post_data = querystring.stringify({
'compilation_level' : 'ADVANCED_OPTIMIZATIONS',
'output_format': 'json',
'output_info': 'compile...
How to directly initialize a HashMap (in a literal way)?
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All Versions
In case you happen to need just a single entry: There is Collections.singletonMap("key", "value").
For Java Version 9 or higher:
Yes, this is possible now. In Java 9 a couple of factory methods have been added that si...
Loading custom configuration files
...en config files that are related to an assembly with the static ConfigurationManager.OpenExe(exePath) method but I just want to open a config that is not related to an assembly. Just a standard .NET config file.
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Building a fat jar using maven
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Note: If you are a spring-boot application, read the end of answer
Add following plugin to your pom.xml
The latest version can be found at
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<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</group...
Anaconda vs. EPD Enthought vs. manual installation of Python [closed]
What are the relative merits / downsides of various Python bundles (EPD / Anaconda) vs. a manual install?
4 Answers
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How does clipsToBounds work?
...r a simple "1" or "2" so that I can discuss these as view1 or view2. Additionally, the black view is the same size as the white view, but it's origin is at the white view's center.
In the view controller's viewDidLoad method, we have the following code:
Objective-C:
- (void)viewDidLoad {
[su...