大约有 40,000 项符合查询结果(耗时:0.0370秒) [XML]

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What is the difference between JOIN and JOIN FETCH when using JPA and Hibernate

...s, JPA will generate a JOIN between the parent entity and the child entity tables in the generated SQL statement. So, taking your example, when executing this JPQL query: FROM Employee emp JOIN emp.department dep Hibernate is going to generate the following SQL statement: SELECT emp.* FROM empl...
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Defeating a Poker Bot

... and patterns (i.e., worst case scenario is a player who plays 24x7 and 16 tables continuously, there is a tiny tiny chance this is a real human. (However some players do have the ability to play very large hand volumes which to the inexperienced eye would appear to be a bot) Throw it glitches. If ...
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What are POD types in C++?

...l be no "magic" going on in the structure: for example hidden pointers to vtables, offsets that get applied to the address when it is cast to other types (at least if the target's POD too), constructors, or destructors. Roughly speaking, a type is a POD when the only things in it are built-in types ...
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What is __gxx_personality_v0 for?

... It is used in the stack unwiding tables, which you can see for instance in the assembly output of my answer to another question. As mentioned on that answer, its use is defined by the Itanium C++ ABI, where it is called the Personality Routine. The reason i...
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Adding iOS UITableView HeaderView (not section header)

I want to add a table header (not section headers) like in the contacts app for example: 5 Answers ...
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How do I find a specific table in my EDMX model quickly?

I was wondering if anyone knows a quicker way to find a table in the EDMX model than just scrolling through the diagram and looking for the thing. Our database has around 50 tables in it and when I'm looking for a specific one it's just a chore to see where VS put the thing. ...
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How to create CSV Excel file C#? [closed]

... Its best example...but how can i add two table in single file,means i have a one table of two rows and other table is 10 rows and both have unique column name.I want to add two rows table on top and after gap of two lines i want to add second table. ...
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Numbering rows within groups in a data frame

... Use ave, ddply, dplyr or data.table: df$num <- ave(df$val, df$cat, FUN = seq_along) or: library(plyr) ddply(df, .(cat), mutate, id = seq_along(val)) or: library(dplyr) df %>% group_by(cat) %>% mutate(id = row_number()) or (the most memor...
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Android Studio/Intellij Idea: “Table of Contents” for a class

...t I have seen. One thing that has been annoying me though is this lack of "Table of Contents" for a class. I apologize for not knowing exactly what to call it. But what I am referring to is the dropdown menu in eclipse that lists all the methods, interfaces, classes and so on that are in that class ...
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printf with std::string?

...has a place that can't easily be filled by C++ syntactic features, just as table structures in html have a place that can't easily be filled by divs. As Dykstra wrote later about the goto, he didn't intend to start a religion and was really only arguing against using it as a kludge to make up for p...