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Why dict.get(key) instead of dict[key]?
...ever you choose it to be), whereas
dictionary["bogus"]
would raise a KeyError.
If omitted, default_value is None, such that
dictionary.get("bogus") # <-- No default specified -- defaults to None
returns None just like
dictionary.get("bogus", None)
would.
...
C++ where to initialize static const
... I have upvoted, but after reviewing the standard there is an error in your code: i must be defined in the cpp. §9.4.2/4 If a static data member is of const integral or const enumeration type, its declaration in the class definition can specify a constant-initializer which shall be an ...
'Microsoft.ACE.OLEDB.12.0' provider is not registered on the local machine
..., everything was working fine, then all the sudden it started getting this error. SO what could have happened to cause this? No code changed.
– eetawil
Jan 25 '16 at 14:21
25
...
Download a file with Android, and showing the progress in a ProgressDialog
...connect();
// expect HTTP 200 OK, so we don't mistakenly save error report
// instead of the file
if (connection.getResponseCode() != HttpURLConnection.HTTP_OK) {
return "Server returned HTTP " + connection.getResponseCode()
...
How to list all properties of a PowerShell object
...properties. Note that in the case where you're trying to view a PowerShell error record, you need to use "Format-List * -Force" to truly see all the error information, for example,
$error[0] | Format-List * -force
Note that the wildcard can be used like a traditional wilcard this:
Get-WmiObject ...
Creating an object: with or without `new` [duplicate]
...wd the C-style string; it came from a string literal. deleteing that is an error (albeit one that will not generate a compilation error, but instead unpredictable behaviour at runtime).
Usually an object should not have the responsibility of deleteing anything that it didn't itself new. This behavi...
Why can't stash be applied to the working directory?
...ral technique for working with stashes even when you don't have the listed error. It works well because a stash really is a commit under the covers (see PS).
Converting a stash to a branch
The following creates a branch based on the HEAD when the stash was created and then applies the stash (it do...
Why are floating point numbers inaccurate?
...ntissa_bits = 52
exponent_bias = 1023
else:
raise ValueError, 'bits argument must be 32 or 64'
bin_iter = iter(bin(struct.unpack(int_pack, struct.pack(float_pack, number))[0])[2:].rjust(bits, '0'))
return [''.join(islice(bin_iter, x)) for x in (1, exponent_bits, mantissa_...
C++ SFINAE examples?
...programming. I know that SFINAE stands for "substitution failure is not an error." But can someone show me a good use for SFINAE?
...
C++ wait for user input [duplicate]
...
@herohuyongtao: It gives this error "error C4996: 'getch': The POSIX name for this item is deprecated. Instead, use the ISO C++ conformant name: _getch."
– CreativeMind
Jan 21 '14 at 12:28
...