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Objective-C: Best way to extract substring from NSString?

I have a space-separated string like @"abc xyz http://www.example.com aaa bbb ccc". How can I extract ... /questions/1612337/objective-c-best-way-to-extract-substring-from-nsstring...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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405 views

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Change Text Color of Items in UIActionSheet - iOS 8

I had been using following code to change text color of items which I add in UIActionSheet.: - (void) ... questions/24154889/change-text-color-of-items-in-uiactionsheet-ios-8...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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84 views

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c# - How to clear text content in RichTextBox

After getting the text in the RichTextBox I want to clear the text. How can I do that? TextRange txt ... .com/questions/10805134/how-to-clear-text-content-in-richtextbox...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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164 views

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How can I disable notices and warnings in PHP within the .htaccess file?

I just want to only turn on PHP errors and disable all notices and warnings in PHP files. question from:https:// ... -i-disable-notices-and-warnings-in-php-within-the-htaccess-file...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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730 views

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scroll - Android: Total height of ScrollView

I have a custom ScrollView (extended android.widget.ScrollView) which I use in my layout. I want to ... ://stackoverflow.com/questions/3609297/android-total-height-of-scrollview...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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184 views

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javascript - Selecting an ID with a colon in it with jQuery

I'm working on a pre-written module for a site, and I need to target an element with the id test:two. Now, ... com/questions/7434215/selecting-an-id-with-a-colon-in-it-with-jquery...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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124 views

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How to cap and round number in ruby

I would like to "cap" a number in Ruby (on Rails). For instance, I have, as a result of a function, a ... ://stackoverflow.com/questions/884512/how-to-cap-and-round-number-in-ruby...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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292 views

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macos - What are the shortcut keys to change to the next and previous tab in Eclipse on Mac OS X?

I want to be able to switch from one file to another in the Eclipse editor (in the Java perspective) from the keyboard ... keys-to-change-to-the-next-and-previous-tab-in-eclipse-on...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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323 views

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Ruby on Rails error "cannot load such file -- less"

I am fairly new to ruby on rails, I have been trying to use twitter-bootstrap as an asset, so I have ... com/questions/13888381/ruby-on-rails-error-cannot-load-such-file-less...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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63 views

1 answer

javascript - jQuery deserialize form

I am using jQuery Serialize to serialize my form elements and would like to deserialize them back. ... :https://stackoverflow.com/questions/6992585/jquery-deserialize-form...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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453 views

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floating point - What is the range of values a float can have in Python?

What are its smallest and biggest values in python? question from:https://stackoverflow.com/questions/1835787/what-is-the-range-of-values-a-float-can-have-in-python...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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435 views

1 answer

regex - Regular expression to count number of commas in a string

How can I build a regular expression that will match a string of any length containing any characters but which must ... /regular-expression-to-count-number-of-commas-in-a-string...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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187 views

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r - filtering data.frame based on row_number()

UPDATE: dplyr has been updated since this question was asked and now performs as the OP wanted I′m trying to ... .com/questions/25994307/filtering-data-frame-based-on-row-number...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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143 views

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c++ - Difference between classes and namespaces?

I'm looking at namespaces and I don't really see a difference between these and classes. I'm ... ://stackoverflow.com/questions/3188156/difference-between-classes-and-namespaces...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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157 views

1 answer

c# - WinForms AcceptButton not working?

Ok, this is bugging me, and I just can't figure out what is wrong... I have made two forms. ... from:https://stackoverflow.com/questions/487920/winforms-acceptbutton-not-working...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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98 views

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r - Find names of columns which contain missing values

I want to find all the names of columns with NA or missing data and store these column names in a ... com/questions/20364450/find-names-of-columns-which-contain-missing-values...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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411 views

1 answer

java - Why are public static final array a security hole?

Effective java says: // Potential security hole! static public final Thing[] VALUES = { ... }; Can somebody ... /questions/2842169/why-are-public-static-final-array-a-security-hole...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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220 views

1 answer

macos - Docker/Boot2Docker: Set HTTP/HTTPS proxies for docker on OS X

In short: How can I set the HTTP/HTTPS proxies for Docker on Mac OS X? In detail: I run Docker (1.12 ... /24489265/docker-boot2docker-set-http-https-proxies-for-docker-on-os-x...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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193 views

1 answer

ios - How to select range of values when using arc4random()

Can I set a range of numbers when using arc4random()? For example 50-100 only. question from:https:// ... questions/3420581/how-to-select-range-of-values-when-using-arc4random...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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298 views

1 answer

javascript - Which is faster: Math.abs(value) or value * -1 ?

Pretty straightforward, but I just want to know which is faster. I think simply multiplying a number by -1 is ... .com/questions/441893/which-is-faster-math-absvalue-or-value-1...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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80 views

1 answer

c# - How do I find all places that SET a property?

It is easy to find all code that uses a property, however how do I find the code that just sets it? (When I ... .com/questions/6096181/how-do-i-find-all-places-that-set-a-property...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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94 views

1 answer

java - Calculating all of the subsets of a set of numbers

I want to find the subsets of a set of integers. It is the first step of "Sum of Subsets" algorithm with ... /questions/4640034/calculating-all-of-the-subsets-of-a-set-of-numbers...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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234 views

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javascript - TypeError: $scope.apply is not a function

I am trying to render the contacts list after retrieving it thru rdflib.js. It is loading properly and saving ... .com/questions/28307345/typeerror-scope-apply-is-not-a-function...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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269 views

1 answer

google chrome - Cannot set cookies in Javascript

I have a very simple line of code that set and read a cookie. I kept getting empty value for my ... :https://stackoverflow.com/questions/8105135/cannot-set-cookies-in-javascript...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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371 views

1 answer

ruby on rails 3 - How to implement multiple different serializers for same model using ActiveModel::Serializers?

Let's say you're implementing a REST API in Rails. When serving a collection, you might want to ... -to-implement-multiple-different-serializers-for-same-model-using-activemodel...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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145 views

1 answer

c++ - Why is inlining considered faster than a function call?

Now, I know it's because there's not the overhead of calling a function, but is the overhead of calling ... questions/4016061/why-is-inlining-considered-faster-than-a-function-call...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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376 views

1 answer

Regex & PHP - isolate src attribute from img tag

With PHP, how can I isolate the contents of the src attribute from $foo? The end result I'm looking for ... .com/questions/2120779/regex-php-isolate-src-attribute-from-img-tag...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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153 views

1 answer

iphone - Does UIGestureRecognizer work on a UIWebView?

I am attempting to get a UIGestureRecognizer working with a UIWebview which is a subview of a UIScrollView. ... .com/questions/2909807/does-uigesturerecognizer-work-on-a-uiwebview...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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