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Key existence check in HashMap
... To explain that in most cases, checking that the key exists will take about the same time than getting the value. So it won't optimize anything to check the key actually exists before getting the value. I know it's a generalization but it can help to understand.
– Colin Hebe...
Find and replace in file and overwrite file doesn't work, it empties the file
...e:
sed -i.bak s/STRING_TO_REPLACE/STRING_TO_REPLACE_IT/g index.html
Without the .bak the command will fail on some platforms, such as Mac OSX.
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What is cardinality in MySQL?
... edited Jul 19 '12 at 0:34
outis
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answered Apr 2 '10 at 10:48
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For..In loops in JavaScript - key value pairs
...ct.entries(test)) {
console.log(key, value);
}
Which will print out this output:
a 1
b 2
c 3
The Object.entries() method returns an array of a given object's own enumerable property [key, value] pairs, in the same order as that provided by a for...in loop (the difference being that a f...
Check list of words in another string [duplicate]
... word in list_]) which is what I would expect - not sure how it worked without that.
– Alex Petralia
Sep 11 '15 at 15:29
4
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Replacing a fragment with another fragment inside activity group
...ed them dynamically, first of all.
Note: R.id.fragment_container is a layout or container of your choice in the activity you are bringing the fragment to.
// Create new fragment and transaction
Fragment newFragment = new ExampleFragment();
FragmentTransaction transaction = getSupportFragmentManag...
How to put a new line into a wpf TextBlock control?
...nce upon a time... &#10; this line below < / SomeObject>
watch out : if you both use &10 AND you go to the next line in your text, you'll have TWO empty lines.
here for details :
http://msdn.microsoft.com/en-us/library/ms788746.aspx
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What is the difference between substr and substring?
... source of error. Good to know the difference. Found additional comments about this here: rapd.wordpress.com/2007/07/12/javascript-substr-vs-substring
– schnaader
Sep 19 '10 at 11:46
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Best lightweight web server (only static content) for Windows [closed]
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You can even leave out the "8000" it seems to default to port 8000.
– Nick Perkins
Jan 19 '14 at 15:22
6
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How should one go about choosing a default TCP/IP port for a new service?
...n developing an app that will listen on a TCP/IP port, how should one go about selecting a default port? Assume that this app will be installed on many computers, and that avoiding port conflicts is desired.
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