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ConnectionTimeout versus SocketTimeout
...timeout occurs only upon starting the TCP connection. This usually happens if the remote machine does not answer. This means that the server has been shut down, you used the wrong IP/DNS name, wrong port or the network connection to the server is down.
A socket timeout is dedicated to monitor the c...
How should one go about choosing a default TCP/IP port for a new service?
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If all developers go by that logic it would mean that all new services gather around the few unassigned ports. What would the probability be that a service is running on an assigned port vs an unassigned port. (Sorry if I'm...
Running Bash commands in Python
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@AWrightIV If you need your subprocess to be run in a particular working directory, you can use the cwd argument to Popen: subprocess.Popen(..., cwd='path\to\somewhere')
– waterproof
Jul 11 '14 at ...
Fastest way to convert string to integer in PHP
...%)
On average, calling intval() is two and a half times slower, and the difference is the greatest if your input already is an integer.
I'd be interested to know why though.
Update: I've run the tests again, this time with coercion (0 + $var)
| INPUT ($x) | (int) $x |intval($x) | 0 + ...
联网 App 第 5 课：带图商品墙，发布、搜索、详情与下架（综合，附 .aia 源...
...输入框_名称.Text)
var 价格 = trim(文本输入框_价格.Text)
if 昵称 == "" {
底部提示条1.Show("先填昵称，买家才知道找谁")
} else if 名称 == "" or textLength(名称) > 20 {
底部提示条1.Show("物品名称 1~20 个字")
} else if not isnumber(价格) {...
IPN vs PDT in Paypal
I'm having some trouble choosing between PayPal's Instant Payment Notification (IPN) and Payment Data Transfer (PDT).
3 Ans...
Creating a new column based on if-elif-else condition
...tion that operates on the rows of your dataframe like so:
def f(row):
if row['A'] == row['B']:
val = 0
elif row['A'] > row['B']:
val = 1
else:
val = -1
return val
Then apply it to your dataframe passing in the axis=1 option:
In [1]: df['C'] = df.apply(f...
Is short-circuiting logical operators mandated? And evaluation order?
... recommended to overload these operators in C++ unless you have a very specific requirement. You can do it, but it may break expected behaviour in other people's code, especially if these operators are used indirectly via instantiating templates with the type overloading these operators.
...
Detecting design mode from a Control's constructor
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@Filip Kunc: if this doesn't work in OnPaint, you may check this condition in constructor and store it in a class field.
– IMil
Apr 6 '16 at 18:37
...
Is std::unique_ptr required to know the full definition of T?
...ve code like the above. When it executes, bad things will probably happen. If you're very lucky your program will crash. However a more probable outcome is that your program will silently leak memory as ~A() won't be called.
Using auto_ptr<A> in the above example doesn't help. You still get t...