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How to access command line parameters?
... functions return an iterator over the arguments. The former iterates over Strings (that are easy to work with) but panics if one of the arguments is not valid unicode. The latter iterates over OsStrings and never panics.
Note that the first element of the iterator is the name of the program itself...
What are dictionary view objects?
...termediate list.
Let's use examples. I've a dict with 1000 keys of random strings and digits and k is the key I want to look for
large_d = { .. 'NBBDC': '0RMLH', 'E01AS': 'UAZIQ', 'G0SSL': '6117Y', 'LYBZ7': 'VC8JQ' .. }
>>> len(large_d)
1000
# this is one option; It creates the keys() l...
Scala: join an iterable of strings
How do I "join" an iterable of strings by another string in Scala?
1 Answer
1
...
When and why should I use a namedtuple instead of a dictionary? [duplicate]
...don't have keys, so hashability isn't an issue.
However, they have a more stringent restriction -- their key-equivalents, "field names", have to be strings.
Basically, if you were going to create a bunch of instances of a class like:
class Container:
def __init__(self, name, date, foo, bar):
...
When NOT to use yield (return) [duplicate]
...eason
// (a new state machine needs to be generated)
public IEnumerable<string> GetKeys()
{
foreach(string key in _someDictionary.Keys)
yield return key;
}
// DO this
public IEnumerable<string> GetKeys()
{
return _someDictionary.Keys;
}
Avoid using yield return when yo...
Unicode (UTF-8) reading and writing to files in Python
...at the backslash is escaped by a backslash. So you have four bytes in your string: "\", "x", "c" and "3".
Edit:
As others pointed out in their answers you should just enter the characters in the editor and your editor should then handle the conversion to UTF-8 and save it.
If you actually have a ...
How do I declare a global variable in VBA?
...tm As Outlook.MailItem)
Dim objAtt As Outlook.Attachment
Dim saveFolder As String
Dim FileName As String
saveFolder = "c:\temp\"
For Each objAtt In itm.Attachments
FileName = objAtt.DisplayName & "_" & Numerator & "_" & Format(Now, "yyyy-mm-dd H-mm-ss") & ".CSV...
Is it possible to get CMake to build both a static and shared version of the same library?
...ke the type of the library a parameter:
set( ${PROJECT_NAME}_LIBTYPE CACHE STRING "library type" )
set_property( CACHE ${PROJECT_NAME}_LIBTYPE PROPERTY STRINGS "SHARED;STATIC" )
add_library( ${PROJECT_NAME} ${PROJECT_NAME}_LIBTYPE ${SOURCE_FILES} )
Having shared and static versions of the library i...
Why do browsers match CSS selectors from right to left?
...at a selector doesn't match as fast as possible; if that requires a bit of extra work in the cases that do match you still win due to all the work you save in the cases that don't match.
If you start by just matching the rightmost part of the selector against your element, then chances are it won't...
error: passing xxx as 'this' argument of xxx discards qualifiers
...simple: make the functions const as:
int getId() const {
return id;
}
string getName() const {
return name;
}
This is necessary because now you can call getId() and getName() on const objects as:
void f(const StudentT & s)
{
cout << s.getId(); //now okay, but error with ...