大约有 40,000 项符合查询结果(耗时:0.0612秒) [XML]

https://stackoverflow.com/ques... 

How to get distinct values for non-key column fields in Laravel?

... Question specifically asks Note that I am not fetching that column only, it is in conjunction with other column values – Hirnhamster Oct 23 '15 at 11:20 ...
https://stackoverflow.com/ques... 

Android: Specify two different images for togglebutton using XML

...d come last. Arrange the items in the following manner to ensure they will all be utilized: <selector xmlns:android="http://schemas.android.com/apk/res/android"> <item android:state_checked="true" android:state_pressed="true" /> //currently pressed turning the toggle on <item...
https://stackoverflow.com/ques... 

What is the difference between `let` and `var` in swift?

... C and C++ allows Unicode identifiers as well, via UCNs. If the compiler supports any Unicode source encoding then you can just use the Unicode characters directly. For example auto ???????? = "dogcow"; works in C++ for clang. ...
https://stackoverflow.com/ques... 

“register” keyword in C?

... a processor register if possible. Most modern compilers do that automatically, and are better at picking them than us humans. share | improve this answer | follow ...
https://stackoverflow.com/ques... 

Why am I getting this error: No mapping specified for the following EntitySet/AssociationSet - Entit

...s library. Shouldn't it be a warning or something? To prevent this error, All you have to do after inserting a new entity is to Generate Database From Model again. That will update the SSDL and fix the mappings. EDIT If you are not using model-first and you "update from database", you will also h...
https://stackoverflow.com/ques... 

How to create P12 certificate for iOS distribution

...rom your hard drive Click Generate Click Download to get the file C. Install .cer and generate .p12 certificate Find .cer file you’ve downloaded and double-click Set Login drop-down to “login" and Click Add Open up KeyChain Access and you'll find profile created in Step A You can expand “p...
https://stackoverflow.com/ques... 

How to parse/format dates with LocalDateTime? (Java 8)

..."1986-04-08T12:30:00". The parse() and format() methods are available for all date/time related objects (e.g. LocalDate or ZonedDateTime) share | improve this answer | follo...
https://stackoverflow.com/ques... 

What is the difference between an expression and a statement in Python?

...s, where operators include arithmetic and boolean operators, the function call operator () the subscription operator [] and similar, and can be reduced to some kind of "value", which can be any Python object. Examples: 3 + 5 map(lambda x: x*x, range(10)) [a.x for a in some_iterable] yield 7 Stat...
https://stackoverflow.com/ques... 

Why are Python lambdas useful? [closed]

...ut lambda functions? Like lambda x: x**2 + 2*x - 5 Those things are actually quite useful. Python supports a style of programming called functional programming where you can pass functions to other functions to do stuff. Example: mult3 = filter(lambda x: x % 3 == 0, [1, 2, 3, 4, 5, 6, 7, 8, 9])...
https://stackoverflow.com/ques... 

Apache is downloading php files instead of displaying them

...rom a web hosting server. It was forcing a version of PHP that was not installed on my local machine. Thus the virtual host wasn't executing the PHP file properly. – BrightIntelDusk Oct 10 '14 at 16:59 ...