大约有 900 项符合查询结果（耗时：0.0188秒） [XML]
Extract subset of key-value pairs from Python dictionary object?
...works in 2.7 too):
{k: bigdict[k] for k in ('l', 'm', 'n')}
Update: As Håvard S points out, I'm assuming that you know the keys are going to be in the dictionary - see his answer if you aren't able to make that assumption. Alternatively, as timbo points out in the comments, if you want a key tha...
Does PostgreSQL support “accent insensitive” collations?
... unaccent() always substitutes a single letter:
SELECT unaccent('Œ Æ œ æ ß');
unaccent
----------
E A e a S
You will love this update to unaccent in Postgres 9.6:
Extend contrib/unaccent's standard unaccent.rules file to handle all
diacritics known to Unicode, and expand ligatures cor...
creating a random number using MYSQL
...
RAND(), UUID(), NOW() are indeterministic functions. The calling of such functions should be avoid from being written into the bin log for replication. For example. INSERT INTO t SET ID=UUID(); will cause the value of the ID fields t...
Hibernate JPA Sequence (non-Id)
...
I fixed the generation of UUID (or sequences) with Hibernate using @PrePersist annotation:
@PrePersist
public void initializeUUID() {
if (uuid == null) {
uuid = UUID.randomUUID().toString();
}
}
...
Hash function that produces short hashes?
...thon again like the accepted answer):
import base64
import hashlib
import uuid
unique_id = uuid.uuid4()
# unique_id = UUID('8da617a7-0bd6-4cce-ae49-5d31f2a5a35f')
hash = hashlib.sha1(str(unique_id).encode("UTF-8"))
# hash.hexdigest() = '882efb0f24a03938e5898aa6b69df2038a2c3f0e'
result = base64.b...
Filling a DataSet or DataTable from a LINQ query result set
...wered Aug 15 '08 at 16:42
Lars MæhlumLars Mæhlum
5,86633 gold badges2424 silver badges3232 bronze badges
...
How to check task status in Celery?
...t like this:
import celery
from celery_app import add
from celery import uuid
task_id = uuid()
result = add.apply_async((2, 2), task_id=task_id)
Now you know exactly what the task_id is and can now use it to get the AsyncResult:
# grab the AsyncResult
result = celery.result.AsyncResult(task_i...
Set breakpoint in C or C++ code programmatically for gdb on Linux
... answered Dec 1 '10 at 16:22
Håvard SHåvard S
20.4k55 gold badges5555 silver badges6767 bronze badges
...
【iOS】有关苹果iOS App的一些进展、BluetoothLE蓝牙拓展等 - App Inventor...
...和安卓不一样，iOS 使用由 iOS 设备和 BLE 设备组合生成的 UUID 来识别 BLE 设备，而不是像 Android 那样使用 MAC 地址
此外，iOS 与 Android 的一个重要区别在于，iOS 使用由 iOS 设备和 BLE 设备组合生成的 UUID 来识别 BLE 设备，而不是像 An...
How to find the foreach index?
... edited Dec 14 '17 at 3:16
buræquete
12.5k44 gold badges3131 silver badges6262 bronze badges
answered Sep 26 '08 at 18:25
...