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Reference — What does this symbol mean in PHP?
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@AcidShout $a - $b works for numbers, but not strings, objects, or arrays.
– mcrumley
Sep 25 '15 at 18:29
49
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Determine the type of an object?
...t question, don't use type - use isinstance:
def foo(obj):
"""given a string with items separated by spaces,
or a list or tuple,
do something sensible
"""
if isinstance(obj, str):
obj = str.split()
return _foo_handles_only_lists_or_tuples(obj)
This covers the cas...
What is the difference between getFields and getDeclaredFields in Java reflection
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As already mentioned, Class.getDeclaredField(String) only looks at the fields from the Class in which you call it.
If you want to search a Field in the Class hierarchy, you can use this simple function:
/**
* Returns the first {@link Field} in the hierarchy for the s...
Express-js wildcard routing to cover everything under and including a path
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Passing in an array of strings is preferential to me as well. Unfortunately: passing an array to app.VERB() is deprecated and will be removed in 4.0
– CodeWarrior
Jul 26 '13 at 16:36
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Easy way to print Perl array? (with a little formatting)
...struct says what it means, with a high degree of clarity and legibility:
$string = join ', ', @array;
print "$string\n";
This construct is documented in perldoc -fjoin.
However, I've always liked how simple $, makes it. The special variable $" is for interpolation, and the special variable $, ...
Android: how to hide ActionBar on certain activities
...idManifest.xml:
<activity android:name=".Activity"
android:label="@string/app_name"
android:theme="@android:style/Theme.NoTitleBar">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category....
Further understanding setRetainInstance(true)
...tribute with a unique ID.
Supply the android:tag attribute with a unique string.
If you provide neither of the previous two, the system uses the ID of the container view.
This strongly implies that if you do setContentView(R.layout.whatever) in Activity.onCreated() and that layout contains ...
How to set -source 1.7 in Android Studio and Gradle
...w use features like the diamond operator, multi-catch, try-with-resources, strings in switches, etc. Add the following to your build.gradle.
android {
compileSdkVersion 19
buildToolsVersion "19.0.0"
defaultConfig {
minSdkVersion 7
targetSdkVersion 19
}
compileO...
Android add placeholder text to EditText
...What you're looking for is setHint(int). Simply pass in a resource id of a string from your xml and you're good to go.
EDIT
And in XML, it's simply android:hint="someText"
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Where are the PostgreSQL logs on macOS?
...>
<dict>
[...]
<key>StandardErrorPath</key>
<string>/usr/local/var/postgres/server.log</string>
</dict>
</plist>
So in this case, /usr/local/var/postgres/server.log.
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