大约有 47,000 项符合查询结果（耗时：0.0489秒） [XML]
Dynamically set local variable [duplicate]
... another local or even a global name. Using a dict it is safe to store any strings as keys.
– Duncan
Oct 18 '17 at 10:58
1
...
How can I get Visual Studio 2008 Windows Forms designer to render a Form that implements an abstract
...ct method is to return the title of the page, then I will make it return a string "Please change the title".
– Darius
Sep 12 '19 at 7:56
...
What are best practices that you use when writing Objective-C and Cocoa? [closed]
...te thread. Make sure to wrap anything that modifies the database for query strings in @synchronize() {} blocks. For short queries just leave things on the main thread for easier convenience.
More SQLite optimization tips are here, though the document appears out of date many of the points are prob...
How to write string literals in python without having to escape them?
Is there a way to declare a string variable in python such that everything inside of it is automatically escaped, or has its literal character value?
...
Detail change after Git pull
...I can then utilize tools with GUI to see the changes :P
I'd then have the extra step of doing a git checkout . and then doing git pull again so that I properly pull and merge, but I value the ability to examine differences in a GUI enough to deal with the extra two steps.
...
Kill child process when parent process is killed
...Set = CharSet.Unicode)]
static extern IntPtr CreateJobObject(object a, string lpName);
[DllImport("kernel32.dll")]
static extern bool SetInformationJobObject(IntPtr hJob, JobObjectInfoType infoType, IntPtr lpJobObjectInfo, uint cbJobObjectInfoLength);
[DllImport("kernel32.dll", Set...
get dictionary value by key
...
It's as simple as this:
String xmlfile = Data_Array["XML_File"];
Note that if the dictionary doesn't have a key that equals "XML_File", that code will throw an exception. If you want to check first, you can use TryGetValue like this:
string xmlfi...
JSON serialization of Google App Engine models
...rt datetime
import time
SIMPLE_TYPES = (int, long, float, bool, dict, basestring, list)
def to_dict(model):
output = {}
for key, prop in model.properties().iteritems():
value = getattr(model, key)
if value is None or isinstance(value, SIMPLE_TYPES):
output[key...
Check if URL has certain string with PHP
I would like to know if some word is present in the URL.
15 Answers
15
...
Why 0 is true but false is 1 in the shell?
...it code of 0 (the result of /bin/true). Otherwise they evaluate as false.
Strings are evaluated differently than exit codes:
if [ 0 ] ; then echo not null ; fi
if [ $(echo 0) ] ; then echo not null ; fi
if [ -z "" ] ; then echo null ; fi
The (( )) arithmetic operator interprets 1 and 0 as true ...