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by: Roy Smith |
last post by:
In the old days, if I wanted to return a sequence of items, I'd return a
list, and loop over it like this:
for thing in getListOfThings ():
do something
With iterators, I'm doing:
for thing in getThingIterator ():
do something.
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by: Brian Roberts |
last post by:
I'm using using generators and iterators more and more intead of
passing lists around, and prefer them. However, I'm not clear on the
best way to detect an empty generator (one that will return no items)
when some sort of special case handling is required.
Typical code for handling an empty list:
if somelist:
for x in somelist:
something(x)
else:
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by: a |
last post by:
I'm having trouble testing a custom object. I've tried many different
approaches. One is shown below.
The XML below shows the state of the object and I'm trying to test for that
state, ie there are NO classes in the Classes collection (Classes) of the
custom object.
The conditional expression returns the error shown below it...
=======================================================XML returned by
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by: ADezii |
last post by:
When you create a Recordset, you may want to know immediately whether that Recordset actually contains any Rows. There are Recordsets that don't return any Rows and you may need to take different steps based on this outcome. There are basically 3 Methods for testing for an Empty Recordset (Recordset that returns no Rows). We will be using DAO, but these Methods are equally applicable to ADO.
'Common Code Block
Dim MyDB As DAO.Database, MyRS As...
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by: Fred Chateau |
last post by:
I can't seem to find a test for DBNulls. Whatever I try doesn't work.
for (int x = 0; x < dataSet.Identity.Rows.Count; x++)
{
DataRow dataRow = dataSet.Tables.NewRow();
if (!dataSet.Identity.Chain_ID.Equals(DBNull.Value))
dataRow = dataSet.Identity.Chain_ID;
else
dataRow = 0;
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by: tinnews |
last post by:
What's the neatest and/or most efficient way of testing if one of a
set of strings (contained in a dictionary, list or similar) is a
sub-string of a given string?
I.e. I have a string delivered into my program and I want to see if
any of a set of strings is a substring of the string I have been
given. It's quite OK to stop at the first one found. Ideally the
strings being searched through will be the keys of a dictionary but
this...
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by: David |
last post by:
Hi list.
What strategies do you use to ensure correctness of new code?
Specifically, if you've just written 100 new lines of Python code, then:
1) How do you test the new code?
2) How do you ensure that the code will work correctly in the future?
Short version:
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by: c0mrade |
last post by:
Try something like this...
list =
for n, it in enumerate(list):
if not it: print 'Error on this definition'
else: print '%d. %s' % (n+1, it)
Results:
1. lkdfjsldk
Error on this definition
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by: Matthew Fitzgibbons |
last post by:
Alexnb wrote:
if not funList:
do_something()
-Matt
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by: marktang |
last post by:
ONU (Optical Network Unit) is one of the key components for providing high-speed Internet services. Its primary function is to act as an endpoint device located at the user's premises. However, people are often confused as to whether an ONU can Work As a Router. In this blog post, we’ll explore What is ONU, What Is Router, ONU & Router’s main usage, and What is the difference between ONU and Router. Let’s take a closer look !
Part I. Meaning of...
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by: Hystou |
last post by:
Most computers default to English, but sometimes we require a different language, especially when relocating. Forgot to request a specific language before your computer shipped? No problem! You can effortlessly switch the default language on Windows 10 without reinstalling. I'll walk you through it.
First, let's disable language synchronization. With a Microsoft account, language settings sync across devices. To prevent any complications,...
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by: tracyyun |
last post by:
Dear forum friends,
With the development of smart home technology, a variety of wireless communication protocols have appeared on the market, such as Zigbee, Z-Wave, Wi-Fi, Bluetooth, etc. Each protocol has its own unique characteristics and advantages, but as a user who is planning to build a smart home system, I am a bit confused by the choice of these technologies. I'm particularly interested in Zigbee because I've heard it does some...
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by: conductexam |
last post by:
I have .net C# application in which I am extracting data from word file and save it in database particularly. To store word all data as it is I am converting the whole word file firstly in HTML and then checking html paragraph one by one.
At the time of converting from word file to html my equations which are in the word document file was convert into image.
Globals.ThisAddIn.Application.ActiveDocument.Select();...
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by: TSSRALBI |
last post by:
Hello
I'm a network technician in training and I need your help.
I am currently learning how to create and manage the different types of VPNs and I have a question about LAN-to-LAN VPNs.
The last exercise I practiced was to create a LAN-to-LAN VPN between two Pfsense firewalls, by using IPSEC protocols.
I succeeded, with both firewalls in the same network. But I'm wondering if it's possible to do the same thing, with 2 Pfsense firewalls...
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by: adsilva |
last post by:
A Windows Forms form does not have the event Unload, like VB6. What one acts like?
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by: 6302768590 |
last post by:
Hai team
i want code for transfer the data from one system to another through IP address by using C# our system has to for every 5mins then we have to update the data what the data is updated we have to send another system
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by: muto222 |
last post by:
How can i add a mobile payment intergratation into php mysql website.
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by: bsmnconsultancy |
last post by:
In today's digital era, a well-designed website is crucial for businesses looking to succeed. Whether you're a small business owner or a large corporation in Toronto, having a strong online presence can significantly impact your brand's success. BSMN Consultancy, a leader in Website Development in Toronto offers valuable insights into creating effective websites that not only look great but also perform exceptionally well. In this comprehensive...
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