大约有 9,000 项符合查询结果（耗时：0.0217秒） [XML]
Does SQLAlchemy have an equivalent of Django's get_or_create?
...or_create(session, model, defaults=None, **kwargs):
instance = session.query(model).filter_by(**kwargs).first()
if instance:
return instance, False
else:
params = dict((k, v) for k, v in kwargs.iteritems() if not isinstance(v, ClauseElement))
params.update(default...
Why doesn't println! work in Rust unit tests?
...
thanks! unrelated to this question, but that also helped me figure out how to get cargo test [--] --bench to work too!
– Jim Garrison
Aug 9 '14 at 12:37
...
Matplotlib discrete colorbar
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You can create a custom discrete colorbar quite easily by using a BoundaryNorm as normalizer for your scatter. The quirky bit (in my method) is making 0 showup as grey.
For images i often use the cmap.set_bad() and convert my data to a numpy masked array. That woul...
How to detect when facebook's FB.init is complete
...t) {
window.thisFunctionIsCalledAfterFbInit = callback; //find this in index.html
}
else{
callback();
}
}
fbEnsureInitAndLoginStatus will call it's callback after FB.init and after FB.getLoginStatus
function fbEnsureInitAndLoginStatus(callback){
runAfterFbInit(function(){
FB.g...
Efficiently replace all accented characters in a string?
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What I'm trying to do is make the sorting of the jQuery tablesorter plugin work correctly for table data in German. The plugin can take an user-defined function to extract the string to sort on, which is what I have to do or the resulting sort order will be wrong.
...
What is a simple command line program or script to backup SQL server databases?
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To backup a single database from the command line, use osql or sqlcmd.
"C:\Program Files\Microsoft SQL Server\90\Tools\Binn\osql.exe"
-E -Q "BACKUP DATABASE mydatabase TO DISK='C:\tmp\db.bak' WITH FORMAT"
You'll also want to read the documentation on BACKUP and RESTORE and ...
What is the idiomatic way to compose a URL or URI in Java?
...n(String[] args) throws URISyntaxException {
List<NameValuePair> qparams = new ArrayList<NameValuePair>();
qparams.add(new BasicNameValuePair("q", "httpclient"));
qparams.add(new BasicNameValuePair("btnG", "Google Search"));
qparams.add(new BasicNameValuePair("aq", "f"));...
What is the in a .vimrc file?
... "Repeat latest f, t, F or T in opposite direction [count] times." It is quite convenient.
– Maxim Kim
Nov 20 '09 at 12:34
11
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How do I check if a variable exists in a list in BASH
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Matvey is right, but you should quote $x and consider any kind of "spaces" (e.g. new line) with
[[ $list =~ (^|[[:space:]])"$x"($|[[:space:]]) ]] && echo 'yes' || echo 'no'
so, i.e.
# list_include_item "10 11 12" "2"
function list_include_item ...
Appending a line to a file only if it does not already exist
...
Just keep it simple :)
grep + echo should suffice:
grep -qxF 'include "/configs/projectname.conf"' foo.bar || echo 'include "/configs/projectname.conf"' >> foo.bar
-q be quiet
-x match the whole line
-F pattern is a plain string
https://linux.die.net/man/1/grep
Edit:
inc...