大约有 7,000 项符合查询结果（耗时：0.0353秒） [XML]
ActiveRecord OR query
.../ActiveRecord may support this syntax natively. It would look similar to:
Foo.where(foo: 'bar').or.where(bar: 'bar')
As noted in this pull request https://github.com/rails/rails/pull/9052
For now, simply sticking with the following works great:
Foo.where('foo= ? OR bar= ?', 'bar', 'bar')
Upda...
How to send POST request in JSON using HTTPClient in Android?
...cle uses this bit of JSON.
The Parts
A fan object with email as a key and foo@bar.com as a value
{
fan:
{
email : 'foo@bar.com'
}
}
So the object equivalent would be fan.email; or fan['email'];. Both would have the same value
of 'foo@bar.com'.
About HttpClient Request
The foll...
Calling a JavaScript function named in a variable [duplicate]
...
If it´s in the global scope it´s better to use:
function foo()
{
alert('foo');
}
var a = 'foo';
window[a]();
than eval(). Because eval() is evaaaaaal.
Exactly like Nosredna said 40 seconds before me that is >.<
...
How to check whether a variable is a class or not?
...
Hm... Nice answer, but when i do type(Foo) on my Foo class, it says <type 'classobj'> instead of <type 'type'>. I assume that the diference comes from the fact that X is inheriting from the object, but Foo isn't. Is there any other difference arising ...
PHP - Check if two arrays are equal
... @StefanGehrig oh you're right. I will leave my comment as such to make my foolishness evident :)
– nawfal
Nov 15 '15 at 13:03
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What's a concise way to check that environment variables are set in a Unix shell script?
...eck it (with version 0.4.1), I get this message:
In script.sh line 13:
: ${FOO:?"The environment variable 'FOO' must be set and non-empty"}
^-- SC2086: Double quote to prevent globbing and word splitting.
Any advice on what I should do in this case?
The short answer is "do as shellcheck suggests...
How to add pandas data to an existing csv file?
...sv.csv', 'a') as f:
df.to_csv(f, header=False)
If this was your csv, foo.csv:
,A,B,C
0,1,2,3
1,4,5,6
If you read that and then append, for example, df + 6:
In [1]: df = pd.read_csv('foo.csv', index_col=0)
In [2]: df
Out[2]:
A B C
0 1 2 3
1 4 5 6
In [3]: df + 6
Out[3]:
A ...
Why is it possible to recover from a StackOverflowError?
...thrown and why. Since you catch the exception outside of the first call to foo(), the thousands of foo stack frames that filled the stack have all been unwound and most of the stack is free to be used again.
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|...
Finding current executable's path without /proc/self/exe
...../bin/executable — relative to pwd
bin/executable — relative to pwd
./foo — relative to pwd
executable — basename, find in path
bin//executable — relative to pwd, non-canonical
src/../bin/executable — relative to pwd, non-canonical, backtracking
bin/./echoargc — relative to pwd, non-c...
When is the finalize() method called in Java?
...instead:
// try-finally block guarantees execution of termination method
Foo foo = new Foo(...);
try {
// Do what must be done with foo
...
} finally {
foo.terminate(); // Explicit termination method
}
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...