大约有 30,000 项符合查询结果（耗时：0.0296秒） [XML]
Difference between decimal, float and double in .NET?
...thing that makes 0.1 "better" than 0.10000001 is because human beings like base 10. And even with a float value, if you initialize two values with 0.1 the same way, they will both be the same value. It's just that that value won't be exactly 0.1 -- it will be the closest value to 0.1 that can be e...
Why do I need an IoC container as opposed to straightforward DI code? [closed]
...ix of one and half a dozen of the other. A real application (not a toy or demo) is bound to be complex, accounting for many corner cases and exceptions-to-the-rules. Either you encapsulate that complexity in imperative code, or else in declarative code. But you have to represent it somewhere.
...
Get generated id after insert
...error during insertion.
long id = db.insert(...);
where db is SQLiteDatabase.
share
|
improve this answer
|
follow
|
...
How to handle configuration in Go [closed]
...o tell the user where the error was, various edge cases and what not.
For base configuration (api keys, port numbers, ...) I've had very good luck with the gcfg package. It is based on the git config format.
From the documentation:
Sample config:
; Comment line
[section]
name = value # Another c...
Deleting DataFrame row in Pandas based on column value
...
If you want to delete rows based on multiple values of the column, you could use:
df[(df.line_race != 0) & (df.line_race != 10)]
To drop all rows with values 0 and 10 for line_race.
...
Check if a string contains a number
...nction will return True if a digit exists in the string, otherwise False.
Demo:
>>> king = 'I shall have 3 cakes'
>>> num_there(king)
True
>>> servant = 'I do not have any cakes'
>>> num_there(servant)
False
...
Copy folder recursively, excluding some folders
...
For RHEL derived distros: yum install rsync, or on Debian-based releases: apt-get install rsync . Unless you're building your server from absolute base on your own hardware, this is a non-issue. rsync is installed by default on my Amazon EC2 boxes, as well and my boxes from ZeroLa...
AngularJS : How to watch service variables?
...cks (http://jsfiddle.net/zymotik/853wvv7s/):
JavaScript:
angular.module("Demo", [])
.factory("DemoService", function($timeout) {
function DemoService() {
var self = this;
self.name = "Demo Service";
self.count = 0;
self.counter = funct...
Embed image in a element
...kground-image to style the <button> (and don't use an <img>).
Demo: http://jsfiddle.net/ThinkingStiff/V5Xqr/
HTML:
<button id="close-image"><img src="http://thinkingstiff.com/images/matt.jpg"></button>
<button id="close-CSS"></button>
CSS:
button {
...
Will HTML5 allow web apps to make peer-to-peer HTTP connections?
...
Enable MediaStream
Enable PeerConnection
Then you can visit the AppRTC Demo Page to try out the demo. See the WebRTC - Running the Demos page for more detailed instructions on setting up Chrome to use the peer to peer functionality and enabling device capture.
UPDATE: The engineers at Ericcso...