大约有 46,000 项符合查询结果（耗时：0.0506秒） [XML]
When should I use Lazy?
...erties for Name, PhoneNumber, and Orders. Name and PhoneNumber are regular strings but Orders is a navigation property that returns a list of every order the customer ever made.
You often might want to go through all your customer's and get their name and phone number to call them. This is a very q...
Why do people say that Ruby is slow? [closed]
... always an issue if it impacts usability. True, scanning an xml file for a string in one second or three doesn't matter from a pure numbers point of view, but a couple seconds difference can make a big difference in usability when you're talking about a user-facing application.
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Database development mistakes made by application developers [closed]
...ese cases and creates more overhead in your queries as you must include an extra join. I would say that it is safer to say that you probably ought to use a surrogate for user-specific data (thus, not countries, currencies and US States).
– Thomas
Aug 2 '10 at 1...
Visual Studio Post Build Event - Copy to Relative Directory Location
... comment: copy /Y "$(TargetPath)" "$(SolutionDir)somewhere\" , without the extra backslash, since $(SolutionDir) includes a trailing backslash (at least in VS2012)
– icy
Sep 12 '14 at 14:19
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Guava: Why is there no Lists.filter() function?
...mmutableCollection, I find this a good design trade-off (vs coming up with extra methods & names, like filteredCopy or whatnot, for combinations of simple utilities).
– Luke Usherwood
Jul 31 '18 at 16:10
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IN clause and placeholders
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A string of the form "?, ?, ..., ?" can be a dynamically created string and safely put into the original SQL query (because it is a restricted form that does not contain external data) and then the placeholders can be used as n...
Are Java static calls more or less expensive than non-static calls?
...java.io.*;
class StaticVsInstanceBenchmark
{
public static void main( String[] args ) throws Exception
{
StaticVsInstanceBenchmark program = new StaticVsInstanceBenchmark();
program.run();
}
static final int DURATION = 1000;
public void run() throws Exception
...
What is the difference between an Azure Web Site and an Azure Web Role
... servers other users' sites. You can scale your site up and down (at some extra charge) to make it more elastic as your resource needs shift.
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Is SHA-1 secure for password storage?
... that cost N once and can thereafter attack many passwords with very small extra cost per password.
If the pre-computed table is a rainbow table, then N can be somewhat bigger, because storage cost is reduced. The bottleneck on N becomes the CPU power that the attacker can muster, not the size of hi...
How to update a git clone --mirror?
...t remote update' does not in fact maintain the 'mirror' status without the extra operations mentioned there
– sehe
May 27 '11 at 12:26
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