大约有 30,000 项符合查询结果（耗时：0.0277秒） [XML]
Check if EditText is empty. [closed]
...etText().toString().trim().length() == 0;
}
If function return false means edittext is not empty and return true means edittext is empty...
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Referring to the null object in Python
... Do something
if not bool(value):
# Do something
None is a "falsey", meaning that if cast to a boolean it will return False and if applied the not operator it will return True. Note however that it's not a property unique to None. In addition to False itself, the property is shared by empty li...
How to delete a certain row from mysql table with same column values?
...xactly what I about to say. But don't forget unique key doesn't necessary means primary key.
– Ryan Fung
Oct 28 '15 at 7:11
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How to find if div with specific id exists in jQuery?
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@ScottE - That's the inverse though, you mean !$("#"+name).length) :)
– Nick Craver♦
Jul 30 '10 at 20:12
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What is the fastest method for selecting descendant elements in jQuery?
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By identical you mean that they both use the same logic to search?
– Marko
Jul 5 '10 at 7:35
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How to open a Bootstrap modal window using jQuery?
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To clarify: "don't need to use javascript" means "don't need to write javascript", javascript is still being used. I tried to edit the answer but it got rejected because it was not "more accurate". If you try the code above with javascript disabled, it won't work. T...
Create boolean column in MySQL with false as default value?
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You have to specify 0 (meaning false) or 1 (meaning true) as the default. Here is an example:
create table mytable (
mybool boolean not null default 0
);
FYI: boolean is an alias for tinyint(1).
Here is the proof:
mysql> create table m...
What do column flags mean in MySQL Workbench?
...Tab” and MySQL CREATE TABLE documentation for additional details.
That means hover over an acronym in the mySql Workbench table editor.
Section 8.1.11.2, “The Columns Tab”
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how to get last insert id after insert query in codeigniter active record
...it is called on. Even in the presence of concurrent inserts, wouldn't this mean it always returns the id corresponding to the insert this particular db object made?
– Abraham Philip
Jul 20 '15 at 20:22
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Correct way to pass multiple values for same parameter name in GET request
...cape , in the query parameter values. But you could decide ; is better. It means the client and server should share the official delimiter for your API. id=a&id=b does not have this problem even though it makes urls longer
– Ronan Quillevere
Jan 12 '18 at 1...