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How to declare string constants in JavaScript? [duplicate]
...ng
obj.constant_2 = 'value_3'; //Silently does nothing
In strict mode, setting values on immutable object throws TypeError. For more details, see https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/freeze
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Comma separator for numbers in R?
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Note if you are also settings digits for decimal places, if you have a vector this can go awry if the numebrs are quite different. From help "Numeric vectors are encoded with the minimum number of decimal places needed to display all the element...
In Java, how do I parse XML as a String instead of a file?
...eate a StringStream or InputSource using your string XML and you should be set.
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Is cout synchronized/thread-safe?
...t does proper locking, or move to C++0x.
As a weak alternative, you could set cout to unbuffered. It is likely (although not guaranteed) that would skip all logic related to the buffer and call write directly. Although that might be prohibitively slow.
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Center Oversized Image in Div
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.parent {
position: relative;
overflow: hidden;
//optionally set height and width, it will depend on the rest of the styling used
}
.child {
position: absolute;
top: -9999px;
bottom: -9999px;
left: -9999px;
right: -9999px;
margin: auto;
}
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How do I update if exists, insert if not (AKA “upsert” or “merge”) in MySQL?
... New | 2014-08-20 18:47:42 |
+----+------+---------------------+
1 row in set (0.00 sec)
Edit: Just a fair warning that REPLACE INTO isn't like UPDATE. As the manual says, REPLACE deletes the row if it exists, then inserts a new one. (Note the funny "2 rows affected" in the example above.) Tha...
Thread Safety in Python's dictionary
... Should consider single operation vs. composite operations,such as get-add-set.
– andy
Dec 19 '14 at 1:57
5
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xpath find if node exists
...ml/body) = 0, as the specific number of nodes is more interesting than the set. For example... when there is unexpectedly more than 1 node that matches your expression.
<xsl:choose>
<xsl:when test="/html/body">
<!-- Found the node(s) -->
</xsl:when>
<...
How to create REST URLs without verbs?
...thing similar). The list of parameters do contain many different types of settings but the parameters are always uploaded as a whole set (in a CSV file).
– Marcus Leon
Oct 25 '09 at 13:26
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How to create a listbox in HTML without allowing multiple selection?
...hat require the browser to render it as a listbox if the size attribute is set. Yes, all major browsers currently do, but there's no guarantee they always will. Realistically though, this would be a breaking change for so many websites, no browser is likely to change it.
– Elez...