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Coalesce function for PHP?
... in most cases, cause PHP to error with an E_NOTICE. The only safe way to test the existence of a variable before using it is to use it directly in empty() or isset(). The ternary operator suggested by Kevin is the best option if you know that all the options in your coalesce are known to be initi...
Changing overflow icon in the action bar
...le you have that is named ic_menu_moreoverflow. If you want a quick way to test it out, use your app's launcher icon filename, which will make it obvious how it works.
A useful resource to use when trying to understand ActionBar styling, is:
Android Action Bar Style Generator
There you can defi...
How do I “decompile” Java class files? [closed]
... of J2SE 5.0 (Java SE 5), has been published on September 30, 2004.
The lastest Java version supported by JAD, the famous Java decompiler written by Mr. Pavel Kouznetsov, is JDK 1.3.
Most of the Java decompilers downloadable today from the Internet, such as “DJ Java Decompiler” or “Cavaj Java ...
How can I undo git reset --hard HEAD~1?
...ewer blobs.
$ git init
Initialized empty Git repository in .git/
$ echo "testing reset" > file1
$ git add file1
$ git commit -m 'added file1'
Created initial commit 1a75c1d: added file1
1 files changed, 1 insertions(+), 0 deletions(-)
create mode 100644 file1
$ echo "added new file" > fil...
How can I get a list of all classes within current module in Python?
...sinstance( getattr(current_module, key), type ):
print(key)
# test.py
import foo
foo.print_classes()
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Linux command: How to 'find' only text files?
...ile /proc/meminfo says /proc/meminfo: empty. I wonder if 'empty' should be tested in addition to 'text', but not sure if also other types could report 'empty'.
– Timo Kähkönen
Mar 8 '13 at 0:26
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Extending Angular Directive
...irective's priority level changes?
JeetendraChauhan has claimed (I haven't tested it though) that this solution will not work in version 1.13.
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How to select date from datetime column?
...ing LIKE instead of operators in an indexed column is high. These are some test results on a table with 1,176,000 rows:
using datetime LIKE '2009-10-20%' => 2931ms
using datetime >= '2009-10-20 00:00:00' AND datetime <= '2009-10-20 23:59:59' => 168ms
When doing a second call over the...
C# elegant way to check if a property's property is null
...
In C# 6 you can use the Null Conditional Operator. So the original test will be:
int? value = objectA?.PropertyA?.PropertyB?.PropertyC;
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Is there any way to see the file system on the iOS simulator?
...` -a Finder
Full Sample
open `xcrun simctl get_app_container booted com.Test data` -a
BUNDLEID_OF_YOUR_APP ???
BUNDLEID_OF_YOUR_APP = "Bundle Identifier"
Features of the solution 1
open file to get app simulator directory
Solution 2
Create a bash scrip with a name of your app and ...