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Rails: around_* callbacks
...u yield to it, then continue execution. That's why it's called around
The order goes like this: before, around, after.
So, a typical around_save would look like this:
def around_save
#do something...
yield #saves
#do something else...
end
...
Is there an auto increment in sqlite?
...ned in the documentation, is that you need to pass in a NULL for the ID in order for this to work.
– Matt Hulse
Oct 26 '11 at 16:50
22
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Camera access through browser
...rding a video or audio;
<input type="file" accept="video/*;capture=camcorder">
<input type="file" accept="audio/*;capture=microphone">
or (new method)
<device type="media" onchange="update(this.data)"></device>
<video autoplay></video>
<script>
functio...
How can I update my ADT in Eclipse?
...
Highly active question. Earn 10 reputation in order to answer this question. The reputation requirement helps protect this question from spam and non-answer activity.
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Is there a better way to dynamically build an SQL WHERE clause than by using 1=1 at its beginning?
... this isn't a problem in your case but you should keep it in mind… "
In order to get rid of this issue, we need to distinguish the "main" WHERE 1=1 and those from subquery, which is easy:
Simply make the "main" WHERE special: I would append a "$" sign
string Query="SELECT * FROM Table1 WHERE$ 1...
How to delete multiple files at once in Bash on Linux?
...
@nuriselcuk you may add -i in order to get confirmation for each file being deleted.
– Felipe Romero
Sep 23 '18 at 2:27
...
C++11 features in Visual Studio 2012
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Atomics
Strong compare and exchange
Bi-directional fences
Data-dependency ordering
Range-based for loop
In early November 2012, Microsoft announced the Visual C++ Compiler November 2012 CTP, which adds more C++11 functionality to Visual Studio 2012:
uniform initialization
initializer lists
var...
What is Serialization?
...database, or a file. Its main purpose is to save the state of an object in order to be able to recreate it when needed. The reverse process is called deserialization.
...
This illustration shows the overall process of serialization
...
Through serialization, a developer can...
How to strip all whitespace from string
...ner,
Mongolian vowel separator,
zero-width non-breaking space (a.k.a. byte order mark),
...etc. See the full list here, under "Related Unicode characters without White_Space property".
So these 6 characters are covered by the list in the second regex, \u180B|\u200B|\u200C|\u200D|\u2060|\uFEFF.
Sour...
How to save and load cookies using Python + Selenium WebDriver
...ion there is another way to do it, use the Chrome options user-data-dir in order to use folders as profiles, I run:
chrome_options = Options()
chrome_options.add_argument("user-data-dir=selenium")
driver = webdriver.Chrome(chrome_options=chrome_options)
driver.get("www.google.com")
You can do he...