大约有 43,000 项符合查询结果（耗时：0.0394秒） [XML]
What makes a SQL statement sargable?
By definition (at least from what I've seen) sargable means that a query is capable of having the query engine optimize the execution plan that the query uses. I've tried looking up the answers, but there doesn't seem to be a lot on the subject matter. So the question is, what does or doesn't make...
Printf width specifier to maintain precision of floating-point value
...decimal solution: use %a.
OP wants “print with maximum precision (or at least to the most significant decimal)”.
A simple example would be to print one seventh as in:
#include <float.h>
int Digs = DECIMAL_DIG;
double OneSeventh = 1.0/7.0;
printf("%.*e\n", Digs, OneSeventh);
// 1.4285714...
Difference between shadowing and overriding in C#?
...noted in the comments to this answer that the above may be dangerous or at least not particularly useful. I would say yes it can be dangerous and would be out there if it were at all useful.
In particular you could get into all sorts of trouble if you also change the accessability modifiers. For ...
Bootstrap 3.0 - Fluid Grid that includes Fixed Column Sizes
... e.g., if you can dynamically hide and show columns, having support for at least one column to be fluid starts to make a lot more sense.
– Nate Bundy
Nov 19 '13 at 22:41
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What is the largest Safe UDP Packet Size on the Internet
...er size, i.e. each implementation must be able to reassemble packets of at least that size. See IETF RFC 1122 for details.
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How to verify that a specific method was not called using Mockito?
...n of this feature is there §4 "Verifying exact number of invocations / at least x / never", and the never javadoc is here.
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Django: multiple models in one template using forms [closed]
.... It wraps regular ModelForms in a single class which is transparently (at least for basic usage) used as a single form. I've copied an example from their docs below.
# forms.py
from django import forms
from django.contrib.auth import get_user_model
from betterforms.multiform import MultiModelForm
...
Why invoke Thread.currentThread.interrupt() in a catch InterruptException block?
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I would consider it a bad practice or at least a bit risky.
Usually higher level methods do not perform blocking operations and they will never see InterruptedException there. If you mask it in every place you perform interruptible operation, you will never get it.
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How do I create a random alpha-numeric string in C++?
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Note that on at least MSVC 2012, you will need to const auto randSeed = std::random_device(), then pass randSeed to std::default_random_engine(). std::random_device{}() cannot compile with this version.
– NuSkooler
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Why are Oracle table/column/index names limited to 30 characters?
...descriptor areas" it says identifiers like names and schemas must allow at least 128 characters.
– Rick
May 4 '11 at 19:43
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