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Real world use of JMS/message queues? [closed]
... world use have people here used JMS or similar message queue technologies for ?
11 Answers
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Negation in Python
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The negation operator in Python is not. Therefore just replace your ! with not.
For your example, do this:
if not os.path.exists("/usr/share/sounds/blues") :
proc = subprocess.Popen(["mkdir", "/usr/share/sounds/blues"])
proc.wait()
For your specific exampl...
How should I store GUID in MySQL tables?
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My DBA asked me when I asked about the best way to store GUIDs for my objects why I needed to store 16 bytes when I could do the same thing in 4 bytes with an Integer. Since he put that challenge out there to me I thought now was a good time to mention it. That being said...
You can sto...
What does status=canceled for a resource mean in Chrome Developer Tools?
...ndent on the computer and/or the speed of the internet connection.
This information is a few months out of date, but I built Chromium from scratch, dug through the source to find all the places where requests could get cancelled, and slapped breakpoints on all of them to debug. From memory, the onl...
Sourcemaps off by one line in Chrome, with Ruby on Rails, Webpack, and React JS
...using different sourcemaps on devtool try all of these to see if one works for inline source map:
inline-source-map
cheap-inline-source-map
for other different configs:
cheap-source-map
cheap-module-source-map
cheap-module-eval-source-map
on webpack config:
{
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devtool:'source-map'
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VB.NET equivalent of C# property shorthand?
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There is no shorthand for Visual Studio 2008 or prior for VB.NET.
In Visual Studio 2010 and beyond, you can use the following shorthand:
public property FirstName as String
This will be handled as your short version in C# is - I think they ca...
validation custom message for rails 3
... the message by writing a manual validation and adding the error to :base, for example errors.add(:base, "Story title is required)
– Marco Prins
Nov 9 '15 at 14:45
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How can I switch to a tag/branch in hg?
...y.
UP: hg up is a shortcut of hg update, which also has hg checkout alias for people with git habits.
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Web Config Transformation to add a child element
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You can use the Insert transformation:
<resizer>
<plugins>
<add name="AzureReader" connectionString="DataConnectionString"
xdt:Transform="Insert" />
</plugins>
</resizer>
Web.config Transform...
MySQL WHERE: how to write “!=” or “not equals”?
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The != operator most certainly does exist! It is an alias for the standard <> operator.
Perhaps your fields are not actually empty strings, but instead NULL?
To compare to NULL you can use IS NULL or IS NOT NULL or the null safe equals operator <=>.
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