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How to find the length of a string in R
...
Or use stri_length from stringi - it works fine with NA's and it is faster :) Check my post!
– bartektartanus
Apr 4 '14 at 16:37
...
Responsive css background images
...based on a browser window size. (2) Elements like div get their own height from their own content, or take available space in a flexbox model. Saying that without explicit width/height the container won't show at all is incorrect. Obviously, if you want to display an empty div with a background imag...
C++ Lock-free Hazard Pointer（冒险指针） - C/C++ - 清泛网 - 专注C/C++及内核技术
...码的无锁算法
Node* currentNode = this->head; // assume the load from "this->head" is atomic
Node* nextNode = currentNode->next; // assume this load is also atomic
在没有自动垃圾收集的情况下，它还面临另一个主要问题。 在这两行之间，另一个线程可能...
Android Studio - How to increase Allocated Heap Size
...above, you can create/edit this file by accessing "Edit Custom VM Options" from the Help menu.
-------ORIGINAL ANSWER--------
Open file located at
/Applications/Android\ Studio.app/Contents/bin/studio.vmoptions
Change the content to
-Xms128m
-Xmx4096m
-XX:MaxPermSize=1024m
-XX:ReservedCodeCacheSize...
Conversion of a datetime2 data type to a datetime data type results out-of-range value
...dle the date for me but it did not. My solution was to send the date value from code instead of relying on the database to generate it.
obj.DateProperty = DateTime.now; // C#
share
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Making interface implementations async
...troduce another interface for async operations. New interface must inherit from original interface.
Example:
interface IIO
{
void DoOperation();
}
interface IIOAsync : IIO
{
Task DoOperationAsync();
}
class ClsAsync : IIOAsync
{
public void DoOperation()
{
DoOperationAs...
Where is the syntax for TypeScript comments documented?
...unately, the JSDoc grammar is not rigorously specified but rather inferred from the behavior of a particular implementation. The majority of the standard JSDoc tags are preoccupied with providing type annotations for plain JavaScript, which is an irrelevant concern for a strongly-typed language such...
How does setting baselineAligned to false improve performance in LinearLayout?
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The term baseline comes from typography. It's the invisible line letters in text sit on. en.wikipedia.org/wiki/Baseline_%28typography%29
– Zsolt Safrany
Sep 29 '12 at 12:26
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ValidateAntiForgeryToken purpose, explanation and example
...te that the feature prevents cross site request forgeries. That is, a form from another site that posts to your site in an attempt to submit hidden content using an authenticated user's credentials. The attack involves tricking the logged in user into submitting a form, or by simply programmatically...
Unique constraint on multiple columns
...or multiple constraints that span multiple columns. The syntax, simplified from technet's documentation, is in the form of:
CONSTRAINT constraint_name UNIQUE [ CLUSTERED | NONCLUSTERED ]
(
column [ ASC | DESC ] [ ,...n ]
)
Therefore, the resuting table definition would be:
CREATE TABLE [dbo...