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Specify format for input arguments argparse python
...hat's what the API defines; "takes a single string argument" per the quote from the docs.
– jonrsharpe
Feb 13 '18 at 21:11
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Java Synchronized Block for .class
... the other hand, can have code above and below them, that can get executed from multiple threads. They only synchronize within the block! That is not the same!
– JacksOnF1re
Mar 15 '18 at 15:31
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HTML/Javascript change div content
...e of innerHTML can easily lead to XSS vulnerabilities when the value comes from an untrusted input. The use of innerText is always recommended for security reasons and currently it is supported by all browsers (caniuse.com/#feat=innertext)
– Mirko Conti
Jun 12...
Django self-referential foreign key
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@Brandon How is 'self' in your answer different from what jared has said in his comment? "i think you mean 'self" !!! . Both are string which is fine according to django docs. ! Any hints
– Stryker
Nov 2 '16 at 3:06
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How to install a specific version of a ruby gem?
... install command.
If you're developing a gem locally, after cutting a gem from your gemspec:
$ gem install gemname-version.gem
Assuming version 0.8, it would look like this:
$ gem install gemname-0.8.gem
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Java “user.dir” property - what exactly does it mean?
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It's the directory where java was run from, where you started the JVM. Does not have to be within the user's home directory. It can be anywhere where the user has permission to run java.
So if you cd into /somedir, then run your program, user.dir will be /somed...
django - query filter on manytomany is empty
...ard answer, other possible solution can be achieved using the Q() object.
from django.db.models import Q
filters = Q(manytomany=None)
TestModel.objects.filter(filters)
Negation:
filters = ~Q(manytomany=None)
TestModel.objects.filter(filters)
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How to read a large file line by line?
...reach the end of the file.
while (!$file->eof()) {
// Echo one line from the file.
echo $file->fgets();
}
// Unset the file to call __destruct(), closing the file handle.
$file = null;
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How to force a SQL Server 2008 database to go Offline
... use an 'sp_who2 active'/'sp_whoisactive' to see some stubborn connections from scheduled job machines or middletier stuff and run KILL with the SPID number to get rid of them
– Chris Wood
Jun 25 '14 at 14:57
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How to vertically center a container in Bootstrap?
...igned vertically to the middle by vertical-align: middle declaration. Spec from W3C:
middle
Align the vertical midpoint of the box with the baseline of the parent box plus half the x-height of the parent.
In cases that the parent - .vertical-center element in this case - has an explicit heig...