大约有 15,000 项符合查询结果（耗时：0.0283秒） [XML]
Count number of objects in list [closed]
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length(x)
Get or set the length of vectors (including lists) and factors, and of any other R object for which a method has been defined.
lengths(x)
Get the length of each element of a list or atomic vector (is.atomic) as a...
Defining and using a variable in batch file
... referenced with %location %. If that’s not what you want, remove the extra space(s) in the definition.
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Build fat static library (device + simulator) using Xcode and SDK 4+
...k nicely with Archive mode.
RECENT CHANGES:
1. Added support for iOS 10.x (while maintaining support for older platforms)
Info on how to use this script with a project-embedded-in-another-project (although I highly recommend NOT doing that, ever - Apple has a couple of show-stopper bugs in Xcod...
undefined method `source_index' for Gem:Module (NoMethodError)
...0.2 for me, and 1.9.3-p327 has RubyGems v1.8.23 installed.
Gem.source_index has been deprecated for a while, but since Rails 2.3 is not getting any updates except critical security patches, this will never get fixed. RubyGems v2.0 finally removed that method. Downgrade to any rubygems version prior...
Auto-fit TextView for Android
Many times we need to auto-fit the font of the TextView to the boundaries given to it.
16 Answers
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How do I tell Maven to use the latest version of a dependency?
...ontrol. Use LATEST and RELEASE with caution, if at all.
See the POM Syntax section of the Maven book for more details. Or see this doc on Dependency Version Ranges, where:
A square bracket ( [ & ] ) means "closed" (inclusive).
A parenthesis ( ( & ) ) means "open" (exclusive).
Here's a...
Listening for variable changes in JavaScript
...an define an object like this, in which aInternal represents the field a:
x = {
aInternal: 10,
aListener: function(val) {},
set a(val) {
this.aInternal = val;
this.aListener(val);
},
get a() {
return this.aInternal;
},
registerListener: function(listener) {
this.aListe...
LINQ Join with Multiple Conditions in On Clause
...on that might make more sense:
from t1 in Projects
from t2 in Tasks.Where(x => t1.ProjectID == x.ProjectID && x.Completed == true)
.DefaultIfEmpty()
select new { t1.ProjectName, t2.TaskName }
sha...
.gitignore for Visual Studio Projects and Solutions
...utput. It will ignore it, but also other things.
– Rex Whitten
Oct 20 '14 at 14:43
7
@starfighter...
Usage of sys.stdout.flush() method
... call to sys.stdout.flush() to get the buffer to display as the script is executing.
– Bacon Bits
Apr 25 '16 at 4:35
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