大约有 24,000 项符合查询结果（耗时：0.0333秒） [XML]
Looping in a spiral
...y+dx, x+dy # jump
yield x, y
x, y = x+dx, y+dy
Testing with:
print 'Spiral 3x3:'
for a,b in spiral(3,3):
print (a,b),
print '\n\nSpiral 5x3:'
for a,b in spiral(5,3):
print (a,b),
You get:
Spiral 3x3:
(0, 0) (1, 0) (1, 1) (0, 1) (-1, 1) (-1, 0) (-1, -1) (0, -1...
Why do people say that Ruby is slow? [closed]
...ardware and some patchlevels may have been different, and a few additional tests were added, but the bigger picture of things did not change.
– vladr
Mar 28 '10 at 3:34
...
static const vs #define
...ILE__ and __LINE__ can be incorporated into the macro substitution
you can test for existence and value in #if statements for conditionally including code (more powerful than a post-preprocessing "if" as the code need not be compilable if not selected by the preprocessor), use #undef-ine, redefine e...
How do you find the row count for all your tables in Postgres
... table_schema='public'
\""
TABLENAMES=$(export PGPASSWORD=test; eval "$PGCOMMAND")
for TABLENAME in $TABLENAMES; do
PGCOMMAND=" psql -h localhost -U fred -d mydb -At -c \"
SELECT '$TABLENAME',
count(*)
FROM $TABLEN...
JSF backing bean structure (best practices)
...
I like to test business code without View's, so I consider BackingBeans as interfaces from View to Model code. I never put any rule or process in a BackingBean. That code goes into Services or Helpers, allowing reuse.
If you use vali...
How to handle screen orientation change when progress dialog and background thread active?
...an rotate screen at any moment, before or after the thread is done. In all tests, the dialog is properly closed and all behaviors are as expected.
What I did is shown below. The goal is to fill my data model (mDataObject) and then populate it to UI. Should allow screen rotation at any moment withou...
Choose File Dialog [closed]
...;</ListView>
</LinearLayout>
FolderLayout.java
package com.testsample.activity;
public class FolderLayout extends LinearLayout implements OnItemClickListener {
Context context;
IFolderItemListener folderListener;
private List<String> item = null;
private...
How to find what code is run by a button or element in Chrome using Developer Tools
...nus tip! I use Regex101 regularly (but there are many others: ) to quickly test my rusty regex patterns and find out where I'm wrong with the step-by-step regex debugger.
If you are not yet "fluent" in Regular Expressions I recommend you start using sites that help you write and visualize them suc...
How does Go compile so quickly?
...
A good test for the translation efficiency of a compiler is self-compilation: how long does it take a given compiler to compile itself? For C++ it takes a very long time (hours?). By comparison, a Pascal/Modula-2/Oberon compiler wou...
What is the purpose of python's inner classes?
... to see whats going on.
Nested classes can create coupling that would make testing more difficult.
In Python you can put more than one class in a file/module, unlike Java, so the class still remains close to top level class and could even have the class name prefixed with an "_" to help signify that...