大约有 21,000 项符合查询结果（耗时：0.0181秒） [XML]
What's the best practice for primary keys in tables?
When designing tables, I've developed a habit of having one column that is unique and that I make the primary key. This is achieved in three ways depending on requirements:
...
Focusable EditText inside ListView
...e is some row in a ListView (whether it's generated by the adapter, or added as a header view) that contains an EditText widget and a Button . All I want to do is be able to use the jogball/arrows, to navigate the selector to individual items like normal, but when I get to a particular row -- ...
HTML input file selection event not firing upon selecting the same file
Is there any chance to detect every file selection the user made for an HTML input of type file element?
7 Answers
...
Hidden features of C
... waiting = 'WAIT',
};
This makes it much simpler if you're looking at a raw memory dump and need to determine the value of an enum without having to look it up.
share
edite...
PHP json_encode encoding numbers as strings
I am having one problem with the PHP json_encode function. It encodes numbers as strings, e.g.
17 Answers
...
What is a faster alternative to Python's http.server (or SimpleHTTPServer)?
...les or any other files that you want to be served up
raw.
There are also a bunch of other commands such as:
conch A Conch SSH service.
dns A domain name server.
ftp An FTP server.
inetd An inetd(8) replacement.
mail ...
Struggling trying to get cookie out of response with HttpClient in .net 4.5
...
Brilliant and raw but just what I need... Good job, thanks.
– Vedran Mandić
Mar 18 at 16:18
add a comment
...
System.currentTimeMillis vs System.nanoTime
...Time. Consistency (monotonicity) was more important to my application than raw precision or absolute accuracy.
share
|
improve this answer
|
follow
|
...
Creating PHP class instance with a string
...$method();
//prints "Banana"
Using Reflection instead of just using the raw string to create an object gives you better control over your object and easier testability (PHPUnit relies heavily on Reflection)
share
...
How to write DataFrame to postgres table?
...gine, if_exists='replace',index=False) #truncates the table
conn = engine.raw_connection()
cur = conn.cursor()
output = io.StringIO()
df.to_csv(output, sep='\t', header=False, index=False)
output.seek(0)
contents = output.getvalue()
cur.copy_from(output, 'table_name', null="") # null values become ...