大约有 47,000 项符合查询结果(耗时:0.0780秒) [XML]
Which is faster: while(1) or while(2)?
...? Or is this a clue that I'm reading generated code? Is it a bug resulting from an ill-advised find-and-replace-all, or a bad merge, or a cosmic ray? Maybe this line of code is supposed to do something dramatically different. Maybe it was supposed to read while(w) or while(x2). I'd better find the a...
How do I append text to a file?
...
cat >> filename
This is text, perhaps pasted in from some other source.
Or else entered at the keyboard, doesn't matter.
^D
Essentially, you can dump any text you want into the file. CTRL-D sends an end-of-file signal, which terminates input and returns you to the shell...
Can a dictionary be passed to django models on create?
...is a django database model instance
def toDict( mod ):
import datetime
from decimal import Decimal
import re
#Go through the object, load in the objects we want
obj = {}
for key in mod.__dict__:
if re.search('^_', key):
continue
#Copy my data
if isinstance( mod.__...
Add days to JavaScript Date
... @bzlm: Yes, I believe the note should read "this approach fails if the 'from' date is not in the same year or month as the current date". I still worry that users will glance over the answer and not read the warning since it doesn't stand out. Thanks.
– sparebytes
...
How to remove space between axis & area-plot in ggplot2?
...n's answer for further possibilities in the latest versions of ggplot2.
From ?scale_x_continuous about the expand-argument:
Vector of range expansion constants used to add some padding around
the data, to ensure that they are placed some distance away from the
axes. The defaults are to ex...
Prompt for user input in PowerShell
...
Read-Host is a simple option for getting string input from a user.
$name = Read-Host 'What is your username?'
To hide passwords you can use:
$pass = Read-Host 'What is your password?' -AsSecureString
To convert the password to plain text:
[Runtime.InteropServices.Marshal]...
Javascript: Extend a Function
...answer. My problem with the second example is that I might need the result from the function that I am extending.
– Gerhard Davids
Nov 22 '13 at 10:31
add a comment
...
What is the type of lambda when deduced with “auto” in C++11?
...er. However typeid<> returns a non-trvial object which should differ from lambda to generic function pointer. So the test for typeid<> is not a valid assumption. In general C++11 do not want us to worry about type specification, all that matter if a given type is convertible to a target ...
The new keyword “auto”; When should it be used to declare a variable type? [duplicate]
...using something like a proxy type where you're depending on the conversion from proxy->target to do part of the job at hand, auto will (attempt to) create a target of the same type as the source so that conversion won't happen. In some cases, that may just delay the conversion, but in others it w...
When to use actors instead of messaging solutions such as WebSphere MQ or Tibco Rendezvous?
...aCamel you can abstract away the queue and produce/consume messages direct from an actor without any code to deal with the message queue message pushing/pulling.
You can forego akka-zeromq and use Akka directly with remoting.
I think akka-zeromq is being removed from the core library but we built a...
