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Print Current Mercurial Revision Hash?
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Try:
hg id -i
Example:
$ hg id -i
adc56745e928
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How do I validate a date string format in python?
...('2003-12-23')
>>> validate('2003-12-32')
Traceback (most recent call last):
File "<pyshell#20>", line 1, in <module>
validate('2003-12-32')
File "<pyshell#18>", line 5, in validate
raise ValueError("Incorrect data format, should be YYYY-MM-DD")
ValueError: In...
Yii2 data provider default sorting
...nk there's proper solution. Configure the yii\data\Sort object:
$dataProvider = new ActiveDataProvider([
'query' => $query,
'sort'=> ['defaultOrder' => ['topic_order' => SORT_ASC]],
]);
Official doc link
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How to get a Docker container's IP address from the host
...{range .NetworkSettings.Networks}}{{.IPAddress}}{{end}}' container_name_or_id
Old Docker client syntax is:
docker inspect --format '{{ .NetworkSettings.IPAddress }}' container_name_or_id
These commands will return the Docker container's IP address.
As mentioned in the comments: if you are on W...
Authoritative position of duplicate HTTP GET query keys
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This is based on an attack called HTTP Parameter Pollution and has been analyzed by OWASP: owasp.org/images/b/ba/AppsecEU09_CarettoniDiPaola_v0.8.pdf At page 9 you'll find a list of 20 systems and a description how they handle this issue.
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When to use window.opener / window.parent / window.top
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window.opener refers to the window that called window.open( ... ) to open the window from which it's called
window.parent refers to the parent of a window in a <frame> or <iframe>
window.top refers to the top-most window from a window nested in one or m...
PHP & mySQL: Year 2038 Bug: What is it? How to solve it?
...can we do to the existing applications that use TIMESTAMP, to avoid the so-called problem, when it really occurs?
Few PHP applications will still be around in 2038, though it's hard to foresee as the web hardly a legacy platform yet.
Here is a process for altering a database table column to conver...
How are 3D games so efficient? [closed]
...t's common for demos of graphics APIs (like dxdemo) to fall back to what's called a software renderer when your hardware doesn't support all of the features needed to show a pretty example. These features might include things like shadows, reflection, ray-tracing, physics, et cetera.
This mimics th...
JsonMappingException: No suitable constructor found for type [simple type, class ]: can not instanti
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@Suman I would not call this a dummy constructor - it's just the default constructor. Not only is it perfectly valid, but is required for many kinds of java bean-type processing. (And, of course, it tripped me up. :-) )
– ...
When to make a type non-movable in C++11?
...t applies to std::atomic<T> objects: unless they could be moved atomically it wouldn't be possible to safely move them, another thread might be trying to call compare_exchange_strongon the object right at the moment it's being moved. So another case where types should not be movable is where t...