大约有 40,000 项符合查询结果（耗时：0.0513秒） [XML]
Passing a string with spaces as a function argument in bash
...
Another solution to the issue above is to set each string to a variable, call the function with variables denoted by a literal dollar sign \$. Then in the function use eval to read the variable and output as expected.
#!/usr/bin/ksh
myFunction()
{
eval string1="$...
GUI not working after rewriting to MVC
...using information obtained from the Model. Similarly, the Controller may reset() the Model. In particular, there is no drawing in the Model and no game logic in the View. This somewhat more complex game was designed to illustrate the same concepts.
Addendum: I've modified the original example to sh...
python max function using 'key' and lambda expression
...
How does key work?
By default in Python 2 key compares items based on a set of rules based on the type of the objects (for example a string is always greater than an integer).
To modify the object before comparison, or to compare based on a particular attribute/index, you've to use the key argum...
Python list of dictionaries search
...: 7 },
... { "name": "Dick", "age": 12 }
... ]
>>> next(item for item in dicts if item["name"] == "Pam")
{'age': 7, 'name': 'Pam'}
If you need to handle the item not being there, then you can do what user Matt suggested in his comment and provide a default using a slightly different ...
What is Eclipse's Ctrl+O (Show Outline) shortcut equivalent in IntelliJ IDEA?
...
depends upon the preferences you have set for your mac machine
– nikoo28
Jun 17 '15 at 9:57
...
Why does string::compare return an int?
...
The method doesn't actually return an integer in the set { -1, 0, 1 }; it can actually be any integral value.
Why? The main reason I can think of is that int is supposed to be the "natural size" value for the architecture; operations on values of this size are typically at lea...
Remove duplicate dict in list in Python
...ictionary. Since the tuples can be hashed, you can remove duplicates using set (using a set comprehension here, older python alternative would be set(tuple(d.items()) for d in l)) and, after that, re-create the dictionaries from tuples with dict.
where:
l is the original list
d is one of the dict...
Python: List vs Dict for look up table
...of items in the data structure. If you don't need to associate values, use sets.
Memory
Both dictionaries and sets use hashing and they use much more memory than only for object storage. According to A.M. Kuchling in Beautiful Code, the implementation tries to keep the hash 2/3 full, so you might ...
Why are elementwise additions much faster in separate loops than in a combined loop?
..., there is a high chance that large allocations will appear at the same offset from a page-boundary.
Here's the test code:
int main(){
const int n = 100000;
#ifdef ALLOCATE_SEPERATE
double *a1 = (double*)malloc(n * sizeof(double));
double *b1 = (double*)malloc(n * sizeof(double));
d...
SQL Server: What is the difference between CROSS JOIN and FULL OUTER JOIN?
...explains the various types of joins with examples of output given a sample set of tables.
share
|
improve this answer
|
follow
|
...