大约有 40,000 项符合查询结果（耗时：0.0796秒） [XML]
How to switch position of two items in a Python list?
...
Given your specs, I'd use slice-assignment:
>>> L = ['title', 'email', 'password2', 'password1', 'first_name', 'last_name', 'next', 'newsletter']
>>> i = L.index('password2')
>>> L[i:i+2] = L[i+1:i-1:-1]
>>> L
['title', 'email', 'pass...
What is this 'Waiting for Background operation' in Visual Studio 2012?
...editor-issue-workaround that suggests changing the indent option in Tools > Options > Text Editor > HTML > Tab to Smart instead of Block. In my case it was already set to Smart and changing it back to Block fixed the problem.
Update: I was wrong, that didn't fix the dialogue, it just de...
Why so red? IntelliJ seems to think every declaration/method cannot be found/resolved
...d (though that is a good way to consistently reproduce it).
Click File -> Synchronize, and IntelliJ should see that everything is okay again.
If that doesn't work, IntelliJ's caches might be corrupt (this used to happen a lot more often than it does now); in that case, regenerate them by
Cl...
Suppress/ print without b' prefix for bytes in Python 3
...s workaround is to manually slice off the b'' from the resulting repr():
>>> x = b'\x01\x02\x03\x04'
>>> print(repr(x))
b'\x01\x02\x03\x04'
>>> print(repr(x)[2:-1])
\x01\x02\x03\x04
share
...
Write to UTF-8 file in Python
...t is right (unusual) about the codecs module - it contains byte strings:
>>> import codecs
>>> codecs.BOM
'\xff\xfe'
>>> codecs.BOM_UTF8
'\xef\xbb\xbf'
>>>
Picking another nit, the BOM has a standard Unicode name, and it can be entered as:
>>> bom= u...
Numpy array dimensions
...
It is .shape:
ndarray.shape
Tuple of array dimensions.
Thus:
>>> a.shape
(2, 2)
share
|
improve this answer
|
follow
|
...
PHPMailer character encoding issues
...ncoding and mb_convert_encoding on $message.
Also take note that
$mail -> charSet = "UTF-8";
Should be replaced by:
$mail->CharSet = 'UTF-8';
And placed after the instantiation of the class (after the new). The properties are case sensitive! See the PHPMailer doc fot the list & exa...
JavaScript: filter() for Objects
...d filter (using ES6 arrow syntax):
Object.filter = (obj, predicate) =>
Object.keys(obj)
.filter( key => predicate(obj[key]) )
.reduce( (res, key) => (res[key] = obj[key], res), {} );
// Example use:
var scores = {
John: 2, Sarah: 3, Janet: 1
};
va...
ERROR:'keytool' is not recognized as an internal or external command, operable program or batch file
... C:\Program Files\Java\jdk1.6.0_21\bin>keytool -list -alias androiddebugkey -keystore .android\debug.keystore -storepass android -keypass android. the error i got is keytool error: java.lang.Exception: Keystore fi...
How do you split a list into evenly sized chunks?
I have a list of arbitrary length, and I need to split it up into equal size chunks and operate on it. There are some obvious ways to do this, like keeping a counter and two lists, and when the second list fills up, add it to the first list and empty the second list for the next round of data, but t...