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When do items in HTML5 local storage expire?
...ey from localStorage and its sibling expiracy key
params:
key <string> : localStorage key to remove
returns:
<boolean> : telling if operation succeeded
*/
function removeStorage(name) {
try {
localStorage.removeItem(name);
localStorage.re...
Should I pass a shared_ptr by reference? [duplicate]
...ought experiment. Let us define a shared pointer type SF = std::shared_ptr<Foo>. In order to consider references, rather than passing function arguments let us look at the type RSF = std::reference_wrapper<T>. That is, if we have a shared pointer SF p(std::make_shared<Foo>());, the...
JPA getSingleResult() or null
...date. The problem is how do I check if it exists? So I tried getSingleResult . But it throws an exception if the
20 Answer...
Converting integer to binary in python
...o do the methods was written as a single string with all specifications built in, eliminating the involvement of variables in such things as the desired length of the bitstring. This solves that completely, and is so intuitive (at least for Python 2) that there's no need to explain each character!
...
How can one see the structure of a table in SQLite? [duplicate]
...CREATE statement(s) for a table or tables
There are many other useful builtin dot commands -- see the documentation at http://www.sqlite.org/sqlite.html, section Special commands to sqlite3.
Example:
sqlite> entropy:~/Library/Mail>sqlite3 Envelope\ Index
SQLite version 3.6.12
Enter ".help"...
JSR-303 @Valid annotation not working for list of child objects
...implemented at the container level (e.g. you would use @Valid private List<Person> to enable cascaded validation for Person).
This is still supported but is not recommended. Please use container
element level @Valid annotations instead as it is more expressive.
Example:
public class ...
Rearranging Tab Bar Controller Order in StoryBoard
... have a tab bar controller nested in a split view controller, and as a result, the tab bar controller's tabs are not visible in the storyboard. Editing the storyboard source code worked for me. Thanks!
– Scott Gardner
Feb 14 '17 at 10:34
...
关于php的socket初探 - PHP - 清泛IT论坛，有思想、有深度
...状态、通知和回调来通知调用者。
3、多路复用（IO/Multiplexing）：为了提高数据信息在网络通信线路中传输的效率，在一条物理通信线路上建立多条逻辑通信信道，同时传输若干路信号的技术就叫做多路复用技术。对于 Socket ...
How to display double quotes(") Symbol in a TextView?
...
It works in strings.xml <string name="double_quote">\"</string> but not in layout.xml
– Tyler Davis
Aug 13 '14 at 17:02
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Android - Center TextView Horizontally in LinearLayout
...
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent">
<LinearLayout
android:orientation="horiz...