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Exact difference between CharSequence and String in java [duplicate]
...tring()
)
I must confess I'm a bit surprised that my compiler javac 1.6.0_33 compiles the + obj using StringBuilder.append(Object) instead of StringBuilder.append(CharSequence). The former probably involves a call to the toString() method of the object, whereas the latter should be possible in a m...
Execute JavaScript code stored as a string
...s called "Cross Site Scripting". See here: en.wikipedia.org/wiki/Cross-site_scripting.
– Brendon Shaw
Nov 18 '18 at 21:10
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What are the most-used vim commands/keypresses?
...dows
^Wn new window
^Wj down to next window; ^Wk up to previous window
^W_ maximise current window; ^W= make all windows equal size
^W+ increase window size; ^W- decrease window size
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% jump to matching parenthesis/bracket/brace, or language block if language module loaded
gd ...
mysql Foreign key constraint is incorrectly formed error
...ISAM engine. It's a silly mistake, which I fixed with:
ALTER TABLE parent_table ENGINE=InnoDB;
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What's the best way to communicate between view controllers?
... answered Mar 5 '12 at 8:38
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Get/pick an image from Android's built-in Gallery app programmatically
...ing at the response from our own action
private static final int SELECT_PICTURE = 1;
private String selectedImagePath;
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
findViewById(R.id.Button0...
Replace comma with newline in sed on MacOS?
...the question says OS X, but this doesn't work with GNU sed-4.2.2-6.fc20.x86_64.
– Cristian Ciupitu
May 25 '14 at 2:49
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how to read System environment variable in Spring applicationContext
...use
<util:properties id="dbProperties"
location="classpath:config_#{systemProperties['env']}/db.properties" />
Combined with java ... -Denv=QA should solve your problem.
Note also a comment by @yiling:
In order to access system environment variable, that is OS level
variables a...
jquery disable form submit on enter
...it() method.
<form id="myform" method="post">
<input name="fav_color" type="text">
<input name="fav_color_2" type="text">
<button type="button" id="form-button-submit">DO IT!</button>
</form>
<script>
$('#form-button-submit').click(function(){
$(...
What does an exclamation mark mean in the Swift language?
...://developer.apple.com/library/content/documentation/Swift/Conceptual/Swift_Programming_Language/TheBasics.html#//apple_ref/doc/uid/TP40014097-CH5-XID_399
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