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Convert an image to grayscale in HTML/CSS
...eProfile="full"
xmlns="http://www.w3.org/2000/svg">
<filter id="desaturate">
<feColorMatrix type="matrix" values="0.3333 0.3333 0.3333 0 0
0.3333 0.3333 0.3333 0 0
0.3333 0.3333 0.3...
Close and Dispose - which to call?
... and Dispose in the case of SqlConnectionObject is:
An application can call Close more
than one time. No exception is
generated.
If you called Dispose method
SqlConnection object state will be
reset. If you try to call any
method on disposed SqlConnection
object, you will receiv...
Using awk to remove the Byte-order mark
...big directory tree to find the one that was with BOM. Found an application called Replace Pioneer and in it:
Batch Runner -> Search (to find all the files in the subfolders) -> Replace Template -> Binary remove BOM (there is a ready made search and replace template for this).
It was not...
How do I save and restore multiple variables in python?
...
There is a built-in library called pickle. Using pickle you can dump objects to a file and load them later.
import pickle
f = open('store.pckl', 'wb')
pickle.dump(obj, f)
f.close()
f = open('store.pckl', 'rb')
obj = pickle.load(f)
f.close()
...
int to hex string
...
Try C# string interpolation introduced in C# 6:
var id = 100;
var hexid = $"0x{id:X}";
hexid value:
"0x64"
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Differences between SP initiated SSO and IDP initiated SSO
...ne explain to me what the main differences between SP initiated SSO and IDP initiated SSO are, including which would be the better solution for implementing single sign on in conjunction with ADFS + OpenAM Federation?
...
Citing the author of a blockquote using Markdown syntax
...mmendations. Given that spoken speeches, not just publications, can be typically cited in an academic work, I'm comfortable calling that a citation on the web too.
– ceejayoz
Sep 8 '12 at 16:43
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App Inventor 2 SQLite 拓展：超流行兼容主流SQL语法的迷你本地数据库引擎...
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创建一个测试数据表，sql如下：
CREATE TABLE users (
id INTEGER PRIMARY KEY,
name TEXT,
age INTEGER);
数据表信息
这时，可以查看一下表信息：
插入数据
往 users 表中插入一条测试数据...
How can I make a button redirect my page to another page? [duplicate]
...t to the button:
<button onclick="location.href = 'www.yoursite.com';" id="myButton" class="float-left submit-button" >Home</button>
But you shouldn't really have it inline like that, instead, put it in a JS block and give the button an ID:
<button id="myButton" class="float-left ...
Simple basic explanation of a Distributed Hash Table (DHT)
... first variable is the key of the object to be stored in the table. We'll call the key "x". The second variable is is the number of buckets, "n". So, to determine which bucket/machine the object is stored in, you have to calculate: hash(x) mod(n). Therefore, when you change the number of bucket...