大约有 20,000 项符合查询结果（耗时：0.0394秒） [XML]
Which method performs better: .Any() vs .Count() > 0?
...etter than Count() > 0 - I've had situation in which Count is faster by order of magnitude on SQL Server (EntityFramework 4).
Here is query with Any that thew timeout exception (on ~200.000 records):
con = db.Contacts.
Where(a => a.CompanyId == companyId && a.ContactStatusId <...
What browsers support HTML5 WebSocket API?
...
XSockets.NET
SuperWebSocket
Nugget
Alchemy-Websockets
Fleck
SignalR
In PHP:
Ratchet
phpwebsocket.
Extendible Web Socket Server
phpdaemon
In Python:
pywebsockets
websockify
gevent-websocket, gevent-socketio and flask-sockets based on the former
Autobahn
Tornado
In C:
libwebsockets
In ...
Reverse / invert a dictionary mapping
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Fun Fact: Dictionaries will be ordered (by time of insertion) in Python 3.7 onwards.
– byxor
Jun 12 '18 at 20:18
...
Benefits of using the conditional ?: (ternary) operator
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Be careful with this in PHP, the ternary operator associates the wrong way in PHP. Essentially, if foo is false, then the whole thing will evaluate to 4 without doing the other tests.
– Tom Busby
Mar 21 '15 at ...
How to send a “multipart/form-data” with requests in python?
...0fa3ddb23c76--
files can also be a list of two-value tuples, if you need ordering and/or multiple fields with the same name:
requests.post(
'http://requestb.in/xucj9exu',
files=(
('foo', (None, 'bar')),
('foo', (None, 'baz')),
('spam', (None, 'eggs')),
)
)
If...
How to show google.com in an iframe?
...ilar to Google style. Google CSE works with web and images search.
google.php
<script>
(function() {
var cx = 'xxxxxxxxxxxxxxxxxxxxxx';
var gcse = document.createElement('script');
gcse.type = 'text/javascript';
gcse.async = true;
gcse.src = 'https://cse.google.com/cse....
Search text in fields in every table of a MySQL database
...
If you have phpMyAdmin installed use its 'Search' feature.
Select your DB
Be sure you do have a DB selected (i.e. not a table, otherwise you'll get a completely different search dialog)
Click 'Search' tab
Choose the search term you wan...
What is the fastest way to compute sin and cos together?
...re is another example (for MSVC): http://www.codeguru.com/forum/showthread.php?t=328669
Here is yet another example (with gcc): http://www.allegro.cc/forums/thread/588470
Hope one of them helps.
(I didn't use this instruction myself, sorry.)
As they are supported on processor level, I expect them...
Resetting a setTimeout
...imer = window.setTimeout(function() {
window.location.href = 'file.php';
}, 115000);
}
function onClick() {
clearTimeout(g_timer);
startTimer();
}
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Inserting multiple rows in a single SQL query? [duplicate]
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