大约有 23,000 项符合查询结果（耗时：0.0435秒） [XML]
Objective-C formatting string for boolean?
... evaluates the boxed expression and returns the appropriate object literal based on its value (i.e. NSString for const char*, NSNumber for int, etc.).
Sqlite or MySql? How to decide? [closed]
...
Their feature sets are not at all the same. Sqlite is an embedded database which has no network capabilities (unless you add them). So you can't use it on a network.
If you need
Network access - for example accessing from another machine;
Any real degree of concurrency - for example, if you...
Python Remove last 3 characters of a string
...
It doesn't work as you expect because strip is character based. You need to do this instead:
foo = foo.replace(' ', '')[:-3].upper()
share
|
improve this answer
|
...
Days between two dates? [duplicate]
...ents on other answers. This is how I would work out the difference in days based on 24 hours and calender days. the days attribute works well for 24 hours and the function works best for calendar checks.
from datetime import timedelta, datetime
def cal_days_diff(a,b):
A = a.replace(hour = 0, ...
String comparison: InvariantCultureIgnoreCase vs OrdinalIgnoreCase? [duplicate]
...ood at different things.
InvariantCultureIgnoreCase uses comparison rules based on english, but without any regional variations. This is good for a neutral comparison that still takes into account some linguistic aspects.
OrdinalIgnoreCase compares the character codes without cultural aspects. Thi...
What is the etymology of 'slug'? [closed]
...'t understand why a very much legitimate question being flagged as opinion based or out of topic. The attitude of the editors have some serious problem.
– Shi B.
Mar 14 '17 at 4:14
...
Principles for Modeling CouchDB Documents
...ey/value pairs into the results of a map/reduce query, the keys are sorted based on UTF-8 collation ("a" comes before "b"). You can also output complex keys from your map/reduce as JSON arrays: ["a", "b", "c"]. Doing that would allow you to include a "tree" of sorts built out of array keys. Using yo...
No resource found - Theme.AppCompat.Light.DarkActionBar
...file (/res/values/styles.xml) to this is text:
<resources>
<!-- Base application theme. -->
<style name="AppTheme" parent="android:Theme.Holo.Light.DarkActionBar">
<!-- Customize your theme here. -->
</style>
...
Using unset vs. setting a variable to empty
...
Based on the comments above, here is a simple test:
isunset() { [[ "${!1}" != 'x' ]] && [[ "${!1-x}" == 'x' ]] && echo 1; }
isset() { [ -z "$(isunset "$1")" ] && echo 1; }
Example:
$ unset foo; [...
Search all of Git history for a string? [duplicate]
I have a code base which I want to push to GitHub as open source. In this git-controlled source tree, I have certain configuration files which contain passwords. I made sure not to track this file and I also added it to the .gitignore file. However, I want to be absolutely positive that no sensiti...