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How big should a UIBarButtonItem image be?
...f you're working on iOS apps!)
That would translate to images 25px square for older devices like iPad 2 / Mini, 50px square for most current devices like iPhone 8 or iPad, and 75px square for Retina HD devices (the iPhone 6/7/8 Plus, or iPhone X). Asset catalogs will help immensely in keeping the d...
Change name of folder when cloning from GitHub?
... -b <branch-name> <repo-url> <destination-folder-name>
for example,
git clone -b dev https://github.com/sferik/sign-in-with-twitter.git signin
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What is the difference between Spring's GA, RC and M2 releases?
Spring's 3.0 version is now GA release, before that they have launched 3.0 RC1 , RC2 version Also, there was Spring 3.0 M2 version. What's the difference between GA, RC, M versions?
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Symfony 2 EntityManager injection in service
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For modern reference, in Symfony 2.4+, you cannot name the arguments for the Constructor Injection method anymore. According to the documentation You would pass in:
services:
test.common.userservice:
class: Tes...
What is the equivalent of “!=” in Excel VBA?
... This has to do with how VBA stores strings in memory. I'll let you Google for a fuller explanation, but in short, part of how strings are stored is that the first bytes store the length of the string, then the following bytes store the characters: [3][C][A][T]. An "empty" string has a [0] for the f...
How to change variables value while debugging with LLDB in Xcode?
...[-u ] -- expression [-o] [-d
] [-u ] -- expression
-G <gdb-format> ( --gdb-format <gdb-format> )
Specify a format using a GDB format specifier string.
-d <boolean> ( --dynamic-value <boolean> )
Upcast the value resulting from the expression ...
How to convert timestamp to datetime in MySQL?
...Remember that if you are using a framework that stores it in milliseconds (for example Java's timestamp) you have to divide by 1000 to obtain the right Unix time in seconds.
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How do I find the number of arguments passed to a Bash script?
...
The number of arguments is $#
Search for it on this page to learn more:
http://tldp.org/LDP/abs/html/internalvariables.html#ARGLIST
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How do I unset an element in an array in javascript?
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If you know the key you should use splice i.e.
myArray.splice(key, 1);
For someone in Steven's position you can try something like this:
for (var key in myArray) {
if (key == 'bar') {
myArray.splice(key, 1);
}
}
or
for (var key in myArray) {
if (myArray[key] == 'bar') {
...
How can you escape the @ character in javadoc?
...avadoc tag:
/**
* This is an "at" symbol: {@literal @}
*/
The javadoc for this will read:
This is an "at" symbol: @
Of course, this will work for any characters, and is the "officially supported" way of displaying any "special" characters.
It is also the most straighforward - you don't need...