大约有 45,000 项符合查询结果（耗时：0.0694秒） [XML]
In Python, how do you convert a `datetime` object to seconds?
...
Be careful indeed. It bit me to my ass big time
– Arg
Aug 9 '13 at 7:29
...
Get login username in java
...n halves the amount of people who are able to pull it off :P. So you get a bit more security, but in turn lose some java conventions on the road.
– Calon
Mar 20 '14 at 14:06
...
How can I upgrade specific packages using pip and a requirements file?
...
@OrbiterFleet I needed to update "requests" so I did pip install Requests --upgrade and only "requests" was upgraded. The description says "upgrade all specified packages" when I view the docs.
– harpervil...
Why does the jquery change event not trigger when I set the value of a select using val()?
...
A "bit" belated but it doesn't fire automatically because it would lead to infinite loops. Think $('#foo').change(function() { $( this ).val( 'whatever' ); });
– JJJ
Jun 28 '14 at 10:21
...
Is there a Python Library that contains a list of all the ascii characters?
...hat you want. (docs)
>>> import string
>>> string.ascii_uppercase
'ABCDEFGHIJKLMNOPQRSTUVWXYZ'
If you want all printable characters:
>>> string.printable
'0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ!"#$%&\'()*+,-./:;?@[\\]^_`{|}~ \t\n\r\x0b\x0c...
Is there a JavaScript strcmp()?
...
newacctnewacct
106k2626 gold badges143143 silver badges214214 bronze badges
...
Difference between HashSet and HashMap?
...
That statement is a bit simplistic. There's some more going on under the covers, ""Returns a hash value for the specified object. In addition to the object's own hashCode, this method applies a "supplemental hash function," which defends agains...
How do I use itertools.groupby()?
... Seanny123
5,70277 gold badges4949 silver badges100100 bronze badges
answered Aug 10 '08 at 18:45
James SulakJames Sulak
26.8k...
Test for multiple cases in a switch, like an OR (||)
... been omitted on purpose. I do that in the following example since it is a bit more complicated and shows how some cases can include code to execute before they fall-through:
switch (someVar) {
case 1:
someFunction();
alert("It was 1");
// fall through
case 2:
alert("T...
How to change Elasticsearch max memory size
...rovided in elasticsearch.conf OVERRIDES ALL OTHER SETTINGS. This took me a bit to figure out, since from the documentation, it seemed that heap memory could be set from elasticsearch.yml.
If your service wrapper settings are set somewhere else, such as at /etc/default/elasticsearch as in James's e...