大约有 48,000 项符合查询结果（耗时：0.0483秒） [XML]
Catch multiple exceptions in one line (except block)
...n 2 + (x * 2), (x * 2) is certainly not a tuple. Parentheses are a general grouping construct. The defining characteristic of a tuple is that it contains a comma -- see the Python documentation: "Note that it is actually the comma which makes a tuple, not the parentheses."
– So...
Maven: best way of linking custom external JAR to my project?
....basedir}/libs</url>
</repository>
<dependency>
<groupId>dropbox</groupId>
<artifactId>dropbox-sdk</artifactId>
<version>1.3.1</version>
</dependency>
/groupId/artifactId/version/artifactId-verion.jar
detail read this blog p...
C++ project organisation (with gtest, cmake and doxygen)
...an all be run together easily?
One cpp file per class (or small cohesive group of classes and functions) is more usual and practical in my opinion. However, definitely, don't compile them all into one binary just so that "they can all be run together". That's a really bad idea. Generally, when it ...
Usage of forceLayout(), requestLayout() and invalidate()
...ceLayout()
When there is a requestLayout() that is called on a parent view group, it does not necessary need to remeasure and relayout its child views. However, if a child should be included in the remeasure and relayout, then you can call forceLayout() on the child. forceLayout() only works on a ch...
How to Correctly Use Lists in R?
... hash package. You can read about it in this blog post from the Open Data Group. Here's a simple example:
> library(hash)
> h <- hash( keys=c('foo','bar','baz'), values=1:3 )
> h[c('foo','bar')]
<hash> containing 2 key-value pairs.
bar : 2
foo : 1
In terms of usability, th...
Anyone else find naming classes and methods one of the most difficult parts in programming? [closed]
...sy if you have multiple Gets in the same class as unrelated things will be grouped together.
I akin this to naming files with dates, you want to say 2009-01-07.log not 1-7-2009.log because after you have a bunch of them, the order becomes totally useless.
...
leiningen - how to add dependencies for local jars?
...en, Clojure and libraries: what am I missing? thread on the Clojure Google group. Many participants specifically mention the need to have local dependencies not contained in any repositories, local or otherwise, and elaborate on the solutions they've come up with for such scenarios. Perhaps you coul...
Differences between MySQL and SQL Server [closed]
...
Group_concat and REGEXP are more than enough reasons to use MySQL over SQL Server (even if the two licences were switched)
– Michele
Feb 24 '15 at 11:51
...
How do you get the logical xor of two variables in Python?
...Also, there's a difference between a three-way XOR vs. order-of-operations-grouped set of two XORs. So 3-WAY-XOR(A,B,C) is not the same thing as XOR(XOR(A,B),C). And ddaa's example is the former, while yours assumes the latter.
– ely
Oct 23 '12 at 21:20
...
SQL Developer is returning only the date, not the time. How do I fix this?
...ar(CREATION_TIME,'HH:MM:SS') TIME,
sum(bytes) Bytes
from
v$datafile
group by
to_char(CREATION_TIME,'RRRR'),
to_char(CREATION_TIME,'MM'),
to_char(CREATION_TIME,'DD'),
to_char(CREATION_TIME,'HH:MM:SS')
ORDER BY 1, 2;
...