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What is the difference between single-quoted and double-quoted strings in PHP?
...le confused why I see some code in PHP with string placed in single quotes and sometimes in double quotes.
12 Answers
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PDO get the last ID inserted
I have a query, and I want to get the last ID inserted. The field ID is the primary key and auto incrementing.
3 Answers
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In Typescript, How to check if a string is Numeric
...9BX9') // NaN
You can also use the unary plus operator if you like shorthand:
+'1234' // 1234
+'9BX9' // NaN
Be careful when checking against NaN (the operator === and !== don't work as expected with NaN). Use:
isNaN(maybeNumber) // returns true if NaN, otherwise false
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What's the difference between String(value) vs value.toString()
Javascript has lot's of "tricks" around types and type conversions so I'm wondering if these 2 methods are the same or if there is some corner case that makes them different?
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Resize image proportionally with CSS? [duplicate]
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This works even if the img tag has a height and width attributes. +1
– Surreal Dreams
Jun 11 '12 at 19:48
66
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What is the equivalent of “android:fontFamily=”sans-serif-light" in Java code?
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It should be possible with setTypeface() and Typeface.create():
convertView.setTypeface(Typeface.create("sans-serif-light", Typeface.NORMAL));
See Docs:
Create a typeface object given a family name, and option style
information. If null is passed for the na...
How to convert wstring into string?
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using std::wcout.imbue(locale) should do the job aswell, and it has the benefit that it does not change any global state.
– smerlin
Jan 26 '11 at 15:22
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Replace one character with another in Bash
...lexity is worse than linear. A small test: x="$(tr -dc 'a-z \n' </dev/urandom | head -c1M)"; time y="$(tr ' ' \\- <<< "$x")"; time z="${x// /-}". With a string length of 1M (=2^20) tr took 0.04s and bash 5.0.11 took 17s. With 2M tr took 0.07s (expected) but bash took 69s (4 times as lon...
What is the meaning of “vnd” in MIME types?
Reading up on content providers, I keep wondering why both the category and type of Android MIME types are prefixed with vnd. For example:
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What's the difference between getPath(), getAbsolutePath(), and getCanonicalPath() in Java?
What's the difference between getPath() , getAbsolutePath() , and getCanonicalPath() in Java?
6 Answers
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