大约有 13,913 项符合查询结果（耗时：0.0267秒） [XML]
String formatting: % vs. .format vs. string literal
...on 2.6 introduced the str.format() method with a slightly different syntax from the existing % operator. Which is better and for what situations?
...
Add a prefix string to beginning of each line
...
# If you want to edit the file in-place
sed -i -e 's/^/prefix/' file
# If you want to create a new file
sed -e 's/^/prefix/' file > file.new
If prefix contains /, you can use any other character not in prefix, or
escape the /, so the sed command becomes
's#^#/opt/workdir#'
# or...
用Javascript获取页面元素的位置（全） - 更多技术 - 清泛网 - 专注C/C++及内核技术
...mpat"){
return {
width: Math.max(document.body.scrollWidth,
document.body.clientWidth),
height: Math.max(document.body.scrollHeight,
...
Java code To convert byte to Hexadecimal
...want each byte String of that array to be converted to its corresponding hexadecimal values.
19 Answers
...
GetType() can lie?
...cessfully lied, right?
Well, yes and no... Consider that using this as an exploit would mean using your BadFoo instance as an argument to a method somewhere, that expects likely an object or a common base type for a hierarchy of objects. Something like this:
public void CheckIfInt(object ob)
{
...
Converting numpy dtypes to native python types
..., how do I automatically convert it to its closest python data type? For example,
12 Answers
...
HTML 5 tag vs Flash video. What are the pros and cons?
...
1
2
Next
36
...
Total memory used by Python process?
... a useful solution that works for various operating systems, including Linux, Windows 7, etc.:
import os
import psutil
process = psutil.Process(os.getpid())
print(process.memory_info().rss) # in bytes
On my current Python 2.7 install with psutil 5.6.3, the last line should be
print(process.m...
Approximate cost to access various caches and main memory?
Can anyone give me the approximate time (in nanoseconds) to access L1, L2 and L3 caches, as well as main memory on Intel i7 processors?
...
In Django - Model Inheritance - Does it allow you to override a parent model's attribute?
...from it:
class AbstractPlace(models.Model):
name = models.CharField(max_length=20)
rating = models.DecimalField()
class Meta:
abstract = True
class Place(AbstractPlace):
pass
class LongNamedRestaurant(AbstractPlace):
name = models.CharField(max_length=255)
food_ty...